Hollerith 45 column horizontal electrical sorting machine, 1920-1930
1920-1930
1920-1930
1926
1909-1932
1944
1958-1965
1956
1957
1924
1980
1901-1970
2023
2023
2022
2006-08-23
1950
1960
1951
circa 1940
1954
1960-1970
1940-1950
1950-1951