Artifact Details Title First report on results of Sigma timing simulator program Catalog Number 102635101 Type Document Description Cover letter and memorandum. Graphs have original annotations Stretch simulation memos : IBM 7030 performance Date Feb. 6, 1958 Author Kolsky, Harwood G.; Cocke, John Extent 14 p. Category Memoranda Subject IBM Project Stretch Series Title Project 7000 file memorandum; no. 1 Credit Gift of Harwood G. Kolsky Lot Number X3021.2005 102635101.pdf