Dusty Diary
...An Exploration of the Ypsilanti Archives
Saturday, August 29, 2009
The Precursor of Ypsilanti's Beyer Hospital's 1950s Punch Card System was Hollerith's 1890 Census Machine
1 comment:
Dusty D
August 30, 2009 at 12:43 AM
Just wanted to let you know.
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Just wanted to let you know.
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