Notebooks
name: label: Collection Creator
content: United Telegraph Workers.
label: Collection Creator
content: Western Union Telegraph Company
setName: label: See more items in
content: Western Union Telegraph Company Records
unitdate: label: Date
content: 1880-1942
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
identifier: label: Identifier
content: NMAH.AC.0205, Series 25
objectType: label: Type
content: Archival materials
arrangement: label: Arrangement
content: The series is divided into six subseries: 

1. H.W. Drake, 1880-1933 

2. H.P. Gilbert, 1928-1932 

3. J. Schmid, 1926-1931 

4. Apparatus Engineer's Office Laboratory Notebook, 1915-1924, 1928 

5. Unsigned Laboratory Notebooks, 1919-1936 

6. Personal Notebook, 1942 (employee work diary)
scopecontent: label: Scope and Contents
content: Series 25 includes a few personal and many laboratory notebooks from employees and engineers of Western Union.

The numbers noted in the container list presumably refer to some Western Union Museum identification number. H.W. Drake's notebooks kept at 195 Broadway contain materials lists; equipment costs; descriptions and drawings of telegraphic equipment; lists of telegraphic line routes; accounts collected for telegraphic service (Central Division, 1880s); accounts of revenues; compensations for employees, expenses, receipts and rates; a comparative statement of remittances from various railroads, 1881-1892; electrical diagrams and blueprints; and a Vacuum Tube Investigation Daily Record Book #2. 

H. P. Gilbert's laboratory workbooks consist of laboratory reports on the results of tests of meters, rectifiers, relays, jacks, tubes, call boxes (with photoprints of the test results), and shellac. Included are negatives, some deteriorating. J. Schmid was an engineer working at the Hudson Street office. His notebooks contain laboratory reports on batteries (Waterbury "Tele" Cells, Waterbury Battery Company, Waterbury, Conn.); test results on call box knobs, relay test tables, rectifiers, signal lamps, time service units, keepers and magnets, clocks, 400-w Call Circuit Register, relays (with photoprints of test results), motor generator set, wire samples, bells and buzzers, lamp-type resistance units, plugs, cords, microfarad meters (Jewel & Weston), volt-ammeters, diamond flasher buttons, and dry cells. There also are two notebooks of the Apparatus Engineer's Office at 195 Broadway consisting of calibrations of electrostatic voltmeters and test results on switches, relays, repeaters, zinc and iron electrodes in different cells, sounders, and quadruplexes. Also included are oscillograms. 

Other notebooks of unknown origin contain tests on dry cells, transmission studies, and entries from Selector Maintenance Cards turned over by the Repair Shop after removal from the field. The cards include reasons for the return of the equipment.