cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5281/zenodo.12574608
title: IODP Expedition 397 Sample report

description: Report includes detailed information about samples taken for testing: location/depth, type/form factor, test, request number, and database identifier.
DOI: 10.5281/zenodo.12574600
title: IODP Expedition 397 Color reflectance

description: Color reflectance data were measured on section halves using an integration sphere and a UV-VIS spectrophotometer mounted on the Section Half Multisensor Logger (SHMSL). Spectral counts are recorded in the range of 380 to 700 nm, covering the visible spectrum, and binned in ~2 nm bins. Spectral data are reduced from spectra and recorded in tristimulus XYZ values, CieLAB L*a*b* values, and other units.
DOI: 10.5281/zenodo.12574601
title: IODP Expedition 397 Color reflectance

description: Color reflectance data were measured on section halves using an integration sphere and a UV-VIS spectrophotometer mounted on the Section Half Multisensor Logger (SHMSL). Spectral counts are recorded in the range of 380 to 700 nm, covering the visible spectrum, and binned in ~2 nm bins. Spectral data are reduced from spectra and recorded in tristimulus XYZ values, CieLAB L*a*b* values, and other units.
DOI: 10.5281/zenodo.12574597
title: IODP Expedition 397 RGB channels (calculated from core photos)

description: Red, green, and blue pixel data were extracted from Section Half Imaging Logger (SHIL) linescan images, typically binned at 0.5 cm resolution using the central 2 cm of the image.
DOI: 10.5281/zenodo.12574598
title: IODP Expedition 397 RGB channels (calculated from core photos)

description: Red, green, and blue pixel data were extracted from Section Half Imaging Logger (SHIL) linescan images, typically binned at 0.5 cm resolution using the central 2 cm of the image.
DOI: 10.5281/zenodo.12574347
title: IODP Expedition 397 Photomicrographs

description: Microscopic images of discrete samples were acquired using stereo and upright light microscopes and captured on digital cameras. Image files were uploaded along with a brief description and a record of the microscopic and lighting conditions when the image was taken.
DOI: 10.5281/zenodo.12574348
title: IODP Expedition 397 Photomicrographs

description: Microscopic images of discrete samples were acquired using stereo and upright light microscopes and captured on digital cameras. Image files were uploaded along with a brief description and a record of the microscopic and lighting conditions when the image was taken.
DOI: 10.13020/f0n5-je03
title: Genomes to Fields Initiative Flight Data - Missouri C5B 2020 - Part 2

description: This dataset (DRUM 6 of 8) is a subset of the flight data collected through the Genomes to Fields Initiative in 2020 and 2021. In conjunction with equivalent datasets on similar material at alternate locations, this data provides a valuable resource for evaluating the performance and stability of hybrid maize across many environments. Many flights throughout the growing season were conducted at these locations (Delaware, Minnesota, Missouri, Nebraska, and Texas) and this dataset includes the orthomosaics, DEMs, plot shapefiles, and extracted plant height values for each of those flights following the pipeline from Anderson, Steven L., II, Seth C. Murray, Lonesome Malambo, Colby Ratcliff, Sorin Popescu, Dale Cope, Anjin Chang, Jinha Jung, and J. Alex Thomasson. 2019. “Prediction of Maize Grain Yield before Maturity Using Improved Temporal Height Estimates of Unmanned Aerial Systems.” The Plant Phenome Journal 2 (1): 1–15.. This maize experiment consisted of over 1000 maize hybrids grown in partial replication across 8 environments in 2 years. A set of common hybrids were grown in every location in order to establish a connection between environments, Within the partially replicated set, hybrids were produced by the cross of double haploids derived from the WI-SS-MAGIC population to the inbred testers PHK76, PHP02, and PHZ51 with the tester choice depending on the relative maturity zone of the location. For this location (Missouri 2020) all testers were used. A modified randomized complete block design was used for testing.
description: YYYYMMDD-G2F-Missouri-C5B-RGB-DEMs.zip is a zip folder containing all DEM files for an individual flight date.
DOI: 10.15468/dl.hsgxe4
title: Occurrence Download

description: A dataset containing 102 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Peru",
 "Geometry POLYGON((-124.14812 -40.37988,-11.06950 -40.37988,-11.06950 4.87495,-124.14812 4.87495,-124.14812 -40.37988))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Tachymenis peruviana Wiegmann, 1834"
 ]
}

 The dataset includes 102 records from 10 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0002713-240626123714530/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.jc5pq6
title: Occurrence Download

description: A dataset containing 15 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Myrcia maritima (Sobral & Bertoncello) A.R.Lourenço & E.Lucas"
 ]
}

 The dataset includes 15 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0002715-240626123714530/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.5c98z6
title: Occurrence Download

description: A dataset containing 859 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON((-83.29446 3.5384,-56.90138 -33.33702,-37.99571 -28.28303,-34.43921 -0.2053,-62.14257 14.58231,-83.29446 3.5384))",
 "OccurrenceStatus is Present",
 "TaxonKey is Hyphessobrycon eques (Steindachner, 1882)"
 ]
}

 The dataset includes 859 records from 43 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0002714-240626123714530/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.beusmh
title: Occurrence Download

description: A dataset containing 14581 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is Human Observation",
 "Country is Peru",
 "TaxonKey is Patagona gigas (Vieillot, 1824)"
 ]
}

 The dataset includes 14581 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0002716-240626123714530/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.4n5j36
title: Occurrence Download

description: A dataset containing 3012 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is United States of America",
 "HasGeospatialIssue is false",
 "TaxonKey is Cenchrus ciliaris L."
 ]
}

 The dataset includes 3012 records from 85 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0002717-240626123714530/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15139/s3/ych3ki
title: Nigeria Health, Population, and Nutrition Multi-Activity Evaluation: Organizational Network Analysis

description: Data for Impact (D4I) conducted a prospective mixed-methods portfolio evaluation of four USAID/Nigeria Health, Population, and Nutrition (HPN) activities, with a focus on comparing an integrated health-programming approach with a disease-focused approach (malaria). As part of this evaluation, we conducted an organizational network analysis (ONA) to better understand collaboration and coordination through structural aspects of resource, information, and funding exchange in Ebonyi, Kebbi, and Zamfara.
DOI: 10.15468/dl.jqy7e5
title: Occurrence Download

description: A dataset containing 8598 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Panthera onca (Linnaeus, 1758)"
 ]
}

 The dataset includes 8598 records from 270 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0002718-240626123714530/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.5281/zenodo.11200451
title: Confocal and micro-CT data of Vicelva rasilis, holotype, NIGP166145

description: This dataset contains the raw confocal laser scanning microscopy (CLSM) slices and X-ray microtomography (micro-CT) slices for the holotype of Vicelva rasilis (NIGP166145) from mid-Cretaceous Burmese amber. This dataset is associated with the publication "A new fossil species of the extant genus Vicelva from mid-Cretaceous Kachin amber (Coleoptera: Staphylinidae)" (DOI:10.1002/ece3.11487).

 

Confocal images were obtained with a Zeiss LSM710 confocal laser scanning microscope, using the 488 nm (Argon) or 561 nm (DPSS 561-10) laser excitation line. The original CZI files are provided, which could be opened by the ZEISS ZEN software.

 

Micro-CT data were obtained with a Zeiss Xradia 520 Versa 3D X-ray microscope. Scanning parameters were as follows: isotropic voxel size, 6.8202 μm; power, 4 W; acceleration voltage, 50 kV; exposure time, 1.5 s; projections, 2401. The TIFF stack is provided.
DOI: 10.5281/zenodo.11200452
title: Confocal and micro-CT data of Vicelva rasilis, holotype, NIGP166145

description: This dataset contains the raw confocal laser scanning microscopy (CLSM) slices and X-ray microtomography (micro-CT) slices for the holotype of Vicelva rasilis (NIGP166145) from mid-Cretaceous Burmese amber. This dataset is associated with the publication "A new fossil species of the extant genus Vicelva from mid-Cretaceous Kachin amber (Coleoptera: Staphylinidae)" (DOI:10.1002/ece3.11487).

 

Confocal images were obtained with a Zeiss LSM710 confocal laser scanning microscope, using the 488 nm (Argon) or 561 nm (DPSS 561-10) laser excitation line. The original CZI files are provided, which could be opened by the ZEISS ZEN software.

 

Micro-CT data were obtained with a Zeiss Xradia 520 Versa 3D X-ray microscope. Scanning parameters were as follows: isotropic voxel size, 6.8202 μm; power, 4 W; acceleration voltage, 50 kV; exposure time, 1.5 s; projections, 2401. The TIFF stack is provided.
DOI: 10.48580/d3y5k.v81
title: Nine new species from China of the subgenera Chaetohomoneura and Neohomoneura in the genus Homoneura (Diptera, Lauxaniidae)
DOI: 10.48580/d3y5n.v86
title: A review of the genus Ruidocollaris Liu (Orthoptera: Tettigoniidae), with description of six new species from China
DOI: 10.48580/d3y58.v81
title: Marine fishes from Galicia (NW Spain): an updated checklist
DOI: 10.48580/d3y59.v75
title: Review of the genus Hyperstoma (Coleoptera: Lampyridae)
DOI: 10.48580/d3y5c.v80
title: Redescription of the fossil oribatid mite Scutoribates perornatus, with implications for systematics of Unduloribatidae (Acari: Oribatida)
DOI: 10.48580/d3y5h.v77
title: Two new species of Amphinemura (Plecoptera: Nemouridae) from China
DOI: 10.48580/d3y55.v83
title: A new species of the Liolaemus elongatus clade (Reptilia: Iguania: Liolaemini) from Cordillera del Viento, northwestern Patagonia, Neuquén, Argentina
DOI: 10.48580/d3y57.v79
title: Tapeworms (Cestoda: Proteocephalidea) of Synodontis spp. (Siluriformes) in Africa: survey of species and their redescriptions
DOI: 10.17632/r839mtn9mj
title: Enhancing the resistant starch content of cassava starch via heat-moisture treatment for application as a prebiotic in chicken feed

description: This study aimed to increase the resistant starch (RS) content of cassava starch via heat-moisture treatment (HMT) and evaluate its prebiotic potential in chicken feed.
DOI: 10.48580/d3y4z.v86
title: Discovery of the centipede family Plutoniumidae (Chilopoda) in Asia: a new species of Theatops from China, and the taxonomic value of spiracle distributions in Scolopendromorpha
DOI: 10.48580/d3y54.v81
title: Two new genera in the family Podospongiidae (Demospongiae: Poecilosclerida) with eight new Western Pacific species
DOI: 10.17632/r839mtn9mj.2
title: Enhancing the resistant starch content of cassava starch via heat-moisture treatment for application as a prebiotic in chicken feed

description: This study aimed to increase the resistant starch (RS) content of cassava starch via heat-moisture treatment (HMT) and evaluate its prebiotic potential in chicken feed.
DOI: 10.48580/d3y4x.v83
title: The weevil genus Trigonopterus Fauvel (Coleoptera, Curculionidae) and its synonyms — a taxonomic study on the species tied to its genus-group names
DOI: 10.48580/d3y4y.v82
title: First record of Hyalascus (Hexactinellida: Rossellidae) from the Indian Ocean, with description of a new species from a volcanic seamount in the Andaman Sea
DOI: 10.48580/d3y4q.v78
title: On some species of Pandeleteius Schoenherr, 1834, in South America south of the tenth parallel (Coleoptera, Curculionidae: Entiminae: Tanymecini)
DOI: 10.48580/d3y4r.v82
title: Taxonomy of the carinaless group of Lasioglossum (Evylaeus) (Hymenoptera, Halictidae) from the Ryukyu Islands, Japan, with description of seven new species
DOI: 10.48580/d3y4k.v81
title: A new microendemic frog species of the genus Blommersia (Anura: Mantellidae) from the east coast of Madagascar
DOI: 10.48580/d3y4l.v77
title: Four new Neotropical species of Stilobezzia (Acanthohelea) Kieffer (Diptera: Ceratopogonidae)
DOI: 10.48580/d3y4n.v81
title: The monkey grasshoppers, genus Zeromastax Porras (Eumastacinae, Eumastacidae, Orthoptera): two new species from the Neotropics
DOI: 10.48580/d3y4c.v81
title: Redescription of the Australian metallic-green tomato fly, Lamprolonchaea brouniana (Bezzi) (Diptera: Lonchaeidae), with notes on the Australian Lamprolonchaea fauna
DOI: 10.48580/d3y4h.v79
title: Three new species of Tetilla Schmidt, 1868 (Tetillidae, Spirophorida, Demospongiae) from Bahia, northeastern Brazil
DOI: 10.48580/d3y45.v81
title: Cryptic species, life cycles, and the phylogeny of Clytia (Cnidaria: Hydrozoa: Campanulariidae)
DOI: 10.48580/d3y46.v82
title: A new non-sexually dichromatic species of the genus Gonatodes (Sauria: Sphaerodactylidae) from Sierra de Perijá, Venezuela
DOI: 10.48580/d3y4d.v80
title: A review of the genus Platypygus Loew (Mythicomyiidae: Platypyginae) in Iran, with notes on Cyrtisiopsis maculiventris (Loew) n. comb.
DOI: 10.17632/mhp7k588yd
title: Psychometric analysis of AI-Generated case-based multiple-choice questions in Medical Physiology

description: 50 physiology case based mcqs generated by AI were administered to medical students as a part of a low-stake formative assessment.
DOI: 10.48580/d3y3w.v81
title: Gekko lauhachindai sp. nov., a new cave-dwelling gecko (Reptilia: Gekkonidae) from central Thailand
DOI: 10.48580/d3y3y.v80
title: Voragonema tatsunoko (Trachymedusae: Rhopalonematidae), a new species of benthopelagic medusa, host to the hyperiid amphipod Mimonectes spandli (Physosomata: Mimonectidae)
DOI: 10.48580/d3y3z.v81
title: A new synanthropic species of Charinus Simon, 1892 from Brazilian Amazonia and notes on the genus (Arachnida: Amblypygi: Charinidae)
DOI: 10.48580/d3y42.v83
title: The millipede family Niponiosomatidae new to the fauna of Taiwan, with descriptions of a new genus and two new species (Diplopoda, Chordeumatida)
DOI: 10.48580/d3y3r.v85
title: A morphological study of the genus Penthalodes (Acari, Prostigmata, Eupodoidea, Penthalodidae) with description of a new species
DOI: 10.48580/d3y3s.v83
title: New bushcrickets of the tribe Meconematini (Orthoptera, Tettigoniidae, Meconematinae) from China
DOI: 10.48580/d3y3t.v82
title: A new species of deep-sea anglerfish, genus Himantolophus (Lophiiformes: Himantolophidae) from the Western South Pacific, with comments on the validity of H. pseudalbinares
DOI: 10.17632/mhp7k588yd.1
title: Psychometric analysis of AI-Generated case-based multiple-choice questions in Medical Physiology

description: 50 physiology case based mcqs generated by AI were administered to medical students as a part of a low-stake formative assessment.
DOI: 10.48580/d3y3n.v82
title: A taxonomic study on Hypogastrura Bourlet, 1839 (Collembola, Hypogastruridae) from China
DOI: 10.48580/d3y3q.v83
title: Revision of fossil species of Dryinus belonging to constans group, with description of a new species (Hymenoptera: Dryinidae)
DOI: 10.48580/d3y3g.v85
title: A new species of Notonyx A. Milne-Edwards, 1873 (Crustacea: Decapoda: Brachyura: Goneplacidae) from the Philippines
DOI: 10.48580/d3y3j.v81
title: Two new species of Australoheros (Teleostei: Cichlidae), with notes on diversity of the genus and biogeography of the Río de la Plata basin
DOI: 10.48580/d3y3m.v76
title: Myxidium finnmarchicum n. sp. (Myxosporea: Myxidiidae) from the gall bladder of whiting Merlangius merlangus (L.) (Pisces: Teleostei) in North Norway
DOI: 10.48580/d3y3p.v81
title: Amblyceps cerinum, a new catfish (Teleostei: Amblycipitidae) from northeastern India
DOI: 10.48580/d3y3d.v79
title: Deciphering the cryptic species diversity of dull-coloured day geckos Phelsuma (Squamata: Gekkonidae) from Madagascar, with description of a new species
DOI: 10.48580/d3y3f.v83
title: A new species of Notonyx A. Milne-Edwards 1873 (Crustacea: Decapoda: Brachyura: Goneplacidae) from Maluku, Indonesia
DOI: 10.48580/d3y36.v83
title: Description of the imago of Meridialaris spina Pescador & Peters 1987 (Insecta: Ephemeroptera)
DOI: 10.25549/whittington-ouc11399fapi
title: Dick Whittington Photography Collection, 1924-1987

description: The "Dick" Whittington Studio was the largest and finest photography studio in the Los Angeles area from 1924 to 1987. Specializing in commercial photography, the Whittington Studio took photographs for nearly every major business and organization in Los Angeles; in so doing, they documented the growth and commercial development of Los Angeles. Clients included Max Factor, the Broadway, Bullock's, and May Co. department stores, the California Fruit Growers Association, Signal Oil, Shell Oil, Union Oil, Van de Kamp's bakeries, Forest Lawn, Sparkletts Water, CBS, Don Lee Television, Goodyear Tire and Rubber, real estate developers, construction companies, automobile, aircraft, and railroad companies, and drive-in theaters. Another notable client was the University of Southern California, which contracted with the Whittington Studios for coverage of athletic and other events. The collection consists primarily of roughly 500,000 negatives; the rest are photoprints. Supporters The collection is only partially digitized, but thanks to the generous help of the National Endowment for the Humanities (NEH) and the National Historical Publications and Records Commission (NHPRC), the USC Libraries has digitized 76,645 at-risk negatives in obsolete formats from the 1920s to 1940s.
DOI: 10.25549/whittington-ouc113828315
title: Mexico: Bull fight, scenes in Texas, USA, and Mexico City, Mexico, 1949

description: 37 photographs of scenes in Texas, USA, and Mexico, 1949 February 1. Handwriting on the negatives: nos. 1-3, "Acapulco"; no. 16, "Washing clothes, Mexico"; nos. 22-23, "Mexico City," an armless man on the sidewalk working with his feet; nos. 6, 9-10, 13-14, 27, 37, "Taxco"; nos. 12, 15, 18 "Palace [of] Fine Arts"; no. 4, "Morning Ranch, Acapulco"; no. 20, "Cathedral, Mexico City"; nos. 20, 36, "Pecos River, Texas"; no. 5, "Diver - Acapulco"; no. 24, "Mex[ico] City" [Benito Juárez Hemicycle]; nos. 8, 11, 17, "Cuernavaca"; nos. 35 "Guadalupe shrine"; no. 19, "Mexico City" [one of the 4 statues of Pegasus]; and no. 21, "Cathedral, Mexico City." There are also: nos. 28-34, a bull ring.
DOI: 10.25549/whittington-ouc113828570
title: Mexico: Bull fight, scenes in Texas, USA, and Mexico City, Mexico, 1949

description: 37 photographs of scenes in Texas, USA, and Mexico, 1949 February 1. Handwriting on the negatives: nos. 1-3, "Acapulco"; no. 16, "Washing clothes, Mexico"; nos. 22-23, "Mexico City," an armless man on the sidewalk working with his feet; nos. 6, 9-10, 13-14, 27, 37, "Taxco"; nos. 12, 15, 18 "Palace [of] Fine Arts"; no. 4, "Morning Ranch, Acapulco"; no. 20, "Cathedral, Mexico City"; nos. 20, 36, "Pecos River, Texas"; no. 5, "Diver - Acapulco"; no. 24, "Mex[ico] City" [Benito Juárez Hemicycle]; nos. 8, 11, 17, "Cuernavaca"; nos. 35 "Guadalupe shrine"; no. 19, "Mexico City" [one of the 4 statues of Pegasus]; and no. 21, "Cathedral, Mexico City." There are also: nos. 28-34, a bull ring.
DOI: 10.25549/whittington-ouc113828316
title: Mexico: Bull fight, scenes in Texas, USA, and Mexico City, Mexico, 1949

description: 37 photographs of scenes in Texas, USA, and Mexico, 1949 February 1. Handwriting on the negatives: nos. 1-3, "Acapulco"; no. 16, "Washing clothes, Mexico"; nos. 22-23, "Mexico City," an armless man on the sidewalk working with his feet; nos. 6, 9-10, 13-14, 27, 37, "Taxco"; nos. 12, 15, 18 "Palace [of] Fine Arts"; no. 4, "Morning Ranch, Acapulco"; no. 20, "Cathedral, Mexico City"; nos. 20, 36, "Pecos River, Texas"; no. 5, "Diver - Acapulco"; no. 24, "Mex[ico] City" [Benito Juárez Hemicycle]; nos. 8, 11, 17, "Cuernavaca"; nos. 35 "Guadalupe shrine"; no. 19, "Mexico City" [one of the 4 statues of Pegasus]; and no. 21, "Cathedral, Mexico City." There are also: nos. 28-34, a bull ring.
DOI: 10.25549/whittington-ouc113828211
title: Mexico: Bull fight, scenes in Texas, USA, and Mexico City, Mexico, 1949

description: 37 photographs of scenes in Texas, USA, and Mexico, 1949 February 1. Handwriting on the negatives: nos. 1-3, "Acapulco"; no. 16, "Washing clothes, Mexico"; nos. 22-23, "Mexico City," an armless man on the sidewalk working with his feet; nos. 6, 9-10, 13-14, 27, 37, "Taxco"; nos. 12, 15, 18 "Palace [of] Fine Arts"; no. 4, "Morning Ranch, Acapulco"; no. 20, "Cathedral, Mexico City"; nos. 20, 36, "Pecos River, Texas"; no. 5, "Diver - Acapulco"; no. 24, "Mex[ico] City" [Benito Juárez Hemicycle]; nos. 8, 11, 17, "Cuernavaca"; nos. 35 "Guadalupe shrine"; no. 19, "Mexico City" [one of the 4 statues of Pegasus]; and no. 21, "Cathedral, Mexico City." There are also: nos. 28-34, a bull ring.
DOI: 10.25549/whittington-ouc11399go7h
title: Dick Whittington Photography Collection, 1924-1987

description: The "Dick" Whittington Studio was the largest and finest photography studio in the Los Angeles area from 1924 to 1987. Specializing in commercial photography, the Whittington Studio took photographs for nearly every major business and organization in Los Angeles; in so doing, they documented the growth and commercial development of Los Angeles. Clients included Max Factor, the Broadway, Bullock's, and May Co. department stores, the California Fruit Growers Association, Signal Oil, Shell Oil, Union Oil, Van de Kamp's bakeries, Forest Lawn, Sparkletts Water, CBS, Don Lee Television, Goodyear Tire and Rubber, real estate developers, construction companies, automobile, aircraft, and railroad companies, and drive-in theaters. Another notable client was the University of Southern California, which contracted with the Whittington Studios for coverage of athletic and other events. The collection consists primarily of roughly 500,000 negatives; the rest are photoprints. Supporters The collection is only partially digitized, but thanks to the generous help of the National Endowment for the Humanities (NEH) and the National Historical Publications and Records Commission (NHPRC), the USC Libraries has digitized 76,645 at-risk negatives in obsolete formats from the 1920s to 1940s.