Henry Grattan Tyrrell and Mary Maude Knox Tyrrell Papers
name: label: Creator
content: Tyrrell, Henry Grattan, 1867-1948
label: Author
content: Tyrrell, Mary Maude Knox
label: Collector
content: National Museum of American History (U.S.). Division of History of Technology
label: Collector
content: National Museum of American History (U.S.). Division of Mechanical and Civil Engineering
label: Collector
content: National Museum of American History (U.S.). Division of Work and Industry
topic: label: Topic
content: Factories
label: Topic
content: Mill buildings
label: Topic
content: Mills
label: Topic
content: Bridges
label: Topic
content: Tunnels
acqinfo: label: Provenance
content: Collection donated by Grattan Tyrrell.  Exact date of acquisition unknown.
creator: label: Creator
content: Tyrrell, Henry Grattan, 1867-1948
label: Author
content: Tyrrell, Mary Maude Knox
setName: label: See more items in
content: Henry Grattan Tyrrell and Mary Maude Knox Tyrrell Papers
abstract: label: Summary
content: Manuscripts, correspondence, business records, newspaper clippings and scrapbooks documenting the career of Henry Grattan Tyrrell, an early-twentieth-century civil engineer and bridge builder who was also a prolific self-published author of hundreds of journal articles and several books. Subjects include aesthetic bridge design, history of bridges, design of movable bridges, and the economical design of factories, shops, and mill buildings.
bioghist: label: Biographical / Historical
content: Henry Grattan Tyrrell (1867-1948) was born in Weston, Ontario, Canada and was educated at the University of Toronto School of Practical Science as a civil engineer specializing in bridge architecture and design. He worked for several architectural companies, including the Boston Bridge Company (Massachusetts), the Brackett Bridge Company (Ohio), as well as his own businesses the American Estimating Company, and Grattan Tyrrell & Co. His brief career as an engineer was superceded by his prolific career as a writer of both journal articles and books on the aesthetics of bridge design and practical designs for factories and mill houses. 

The son of an avid outdoorsman and explorer, his early writings are about the Canadian wilderness. By the turn of the century, his writing focused on architectural engineering, specifically the design of bridges. Tyrrell was well-traveled and wrote at length about the beauty of a well-designed bridge, like those he had seen all over the world. He suggested that America's cities (Chicago, Seattle, Milwaukee and Cleveland), build attractive bridges, which, he argued, could also be economical. His books History of Bridge Engineering (1911) and Artistic Bridge Design (1912) spoke to these issues. He expanded his love of aesthetics to buildings as well, advocating for the economical and practical design of factory buildings and floors, as well as mill houses and shops (Mill Buildings, 1911; Engineering of Shops and Factories, 1912). His last (possibly unpublished) book, Movable Bridges (1921), explored the design of drawbridges, vertical lift bridges and suspension bridges. His wife, Mary Maude Knox Tyrrell, co-authored and illustrated many of the books.

Tyrrell was an avid self-promoter, writing reviews of his own books, including contents and endorsements of his achievements, and selling them in pamphlet form. He was a frequent contributor to many engineering journals, such as Canadian Engineer, Builders' Magazine, Engineering News, and The Engineering Magazine. His prolific writings on the subjects of bridge engineering and aesthetics are a lasting legacy of early-twentieth century ingenuity.
physdesc: label: Extent
content: 2.3 Cubic feet (11 boxes, 1 oversize folder)
unitdate: label: Date
content: 1886-1941
custodhist: label: Custodial History
content: Transferred from Division of Work and Industry to the Archives Center in 2006.
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
identifier: label: Identifier
content: NMAH.AC.0948
objectType: label: Type
content: Collection descriptions
label: Type
content: Archival materials
label: Type
content: Manuscripts
label: Type
content: Publications
label: Type
content: Advertisements
label: Type
content: Scrapbooks
label: Type
content: Correspondence
arrangement: label: Arrangement
content: This collection is divided into seven (7) series:

Series 1: Personal, 1886; 1920s-1930s; undated

Series 2: Correspondence, 1895-1901; 1907; 1911-1917; 1928-1929; 1931-1941

Series 3: Business Records, 1899-1937

Subseries 3.1: Engineering, 1899; 1902; 1905; 1917-1919; 1923; 1935

Subseries 3.2: Publishing, 1900-1920

Subseries 3.3: Legal/Financial, 1901-1902; 1907-1908; 1914-1915; 1920-1932; 1937

Series 4: Proposals, Drawings and Sketches, 1900-1908; 1920-1921; undated

Series 5: Publications, 1886; 1900-1905; 1909-1916

Subseries 5.1: Books, 1911-1913; 1920-1921

Subseries 5.2 Articles, 1886; 1900-1905; 1909-1916; 1920

Subseries 5.3 Article drafts/submission copies, 1900-1905; 1912-1915; 1920

Series 6: Press Clippings, 1900-1921

Series 7: Scrapbooks, 1901-1920
processinfo: label: Processing Information
content: Collection was processed by Sarah Hedlund, intern, August 2016.
genre_format: label: Genre/Form
content: Manuscripts
label: Genre/Form
content: Publications
label: Genre/Form
content: Advertisements
label: Genre/Form
content: Scrapbooks
label: Genre/Form
content: Correspondence
scopecontent: label: Scope and Contents
content: This collection contains typed manuscripts, correspondence, drawings, and business records written by and relating to Henry Grattan Tyrrell, civil engineer, bridge builder and prolific self-published author on the subjects of bridge engineering, aesthetics and history of bridge design, and the economical design of factories, shops and mill buildings. 

The bulk of the collection consists of drafts and submission copies of his numerous published journal articles as well as early manuscripts of several of his books. Also included are two scrapbooks compiled by Tyrrell, containing many of his published articles, pamphlets, and letters to editors of engineering-related publications, as well as advertising material for both his engineering businesses and his books. There are many newspaper clippings related to projects Tyrrell worked on or expressed interest in, documentation of claims he brought against various companies for infringement or failure to pay, lists of his works, compilations of critical praise and personal endorsements, and general material relating to his experiences in publishing. 

The collection presents a specific view of the trends and innovations in engineering at the beginning of the twentieth century, particularly focusing on bridges of all types and materials, as well as an early example of self-employment and self-promotion. It may be of interest to researchers in the areas of bridge and factory design in the late nineteenth and early twentieth century, historical engineering publications, and the history of bridge building in the United States and Canada.