Notes

Bibliography

Douglas W. Jones, "Punched Cards," http://www.cs.uiowa.edu/~jones/cards/ (Computer Science, The University of Iowa, accessed 2004 Oct 23).

Douglas W. Jones, "Punched Cards: A Brief Illustrated Technical History," http://www.cs.uiowa.edu/~jones/cards/history.html (Computer Science, The University of Iowa, accessed 2004 Oct 23). From Hanna Horsey 2002 Sep 16.