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Fig. 228. Punched Card Such as Was Used by the United States Government for Tabulating the 1910 Census by Electric Card-Sorting and Tabulating Machines
There was a card similar to this for each inhabitant of the country. Holes punched at different positions in various columns represent the answers
to all questions asked by the census enumerator regarding race, place of birth, age, etc. Punched-card systems can often be used advantageously
for the cost and statistical work of corporations
