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From Dead Media Archive
- 04:52, 5 March 2008 (diff | hist) . . (-198) . . Hollerith Punch Card (→Multiple Uses of the Punch Card Technology)
- 04:47, 5 March 2008 (diff | hist) . . (+1,717) . . Hollerith Punch Card (→The role of the Punch Cards in the American Census)
- 04:32, 5 March 2008 (diff | hist) . . (+209) . . Hollerith Punch Card (→The role of the Punch Cards in the American Census)
- 04:30, 5 March 2008 (diff | hist) . . (+4,457) . . Hollerith Punch Card