If anyone is interested in GCR history, and has a spare $3000 - 4000, from
Christies auction catalogue
http://www.christies.com/LotFinder/search/LOTDETAIL.ASP?sid=&intObjectID=4443578
of their sale on 23rd Feb 2005 in New York.
"GREAT CENTRAL RAILWAY. Series of 10 typed letters and memoranda on
calculating machines showing how calculating machines were ordered and sold.
August 10-November 1, 1915. 11 pages total."
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