Books Relating to Dorr E. Felt and the Comptometer

Books Relating to Dorr E. Felt and the Comptometer

Usage conditions apply
The titles Include Ropp's New Calculator (1903), a book of tables inscribed to Felt. Also included are repairmen's instruction books and books for training Comptometer operators. Titles date as late as 1954. For complete list, see nonaccession file.
Currently not on view
Object Name
books, group of
Physical Description
cloth (overall material)
paper (overall material)
overall: 11.2 cm x 21.6 cm x 40.5 cm; 4 13/32 in x 8 1/2 in x 15 15/16 in
ID Number
nonaccession number
catalog number
Credit Line
Gift of Mary Elizabeth Schmidt
See more items in
Medicine and Science: Mathematics
Adding Machines
Women Teaching Math
Data Source
National Museum of American History
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