Notice all were done after the widespread availability of computers. In 1984 AIS published on microfiche what it had completed. Ancestry.com published AIS indexes online in 1999. Some limited scope indexes were published earlier. For example, in 1964 the Ohio Library Foundation published an index of the 1830 Ohio census. This, too, was a computer printout. Volunteer family historians extracted the names of heads of households onto index cards. The cards were keyed onto punch cards, which were then sorted by an IBM mainframe computer. Ohio Library Foundation, ed., 1830 Federal Population Census Index, vol. 1 (Columbus, Ohio: Ohio Library Foundation, 1964), 1.
We cannot easily compare our results with those published for earlier censuses, so we wont try. Between 1984 and 1989 we completed indexing of divorced and widowed females , divorced and widowed males , separated parents , native women , native men , Indian women , US Freedmen , resettled Filipinos , lost persons , lost children , d2c66b5586