The Type 11 Card Punch reportedly was introduced in 1923, when IBM cards had 45 columns and round holes, and later was re-engineered to used the 80-column, rectangular-hole cards introduced in 1928. Preliminary indentificaton of this object is based on comparison to information accessed on October 31, 2008, at http://www.columbia.edu/acis/history/011.html, the website of Frank da Cruz / fdc@columbia.edu / Columbia University Computing History. Website updated as of September 26, 2007. Website cites: IBM Accounting Machines, Customeer Engineer Manual of Instruction: Electric Punch Type 011, International Business Machines Corporation, New York, New York (undated).