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1. A History of the Logarithmic Slide Rule and Allied Instruments. Florian Cajori. 2. Slide Rules: Their History, Models and Makers. Peter M. Hopp. Astragal Press, 1999. 3. www.hpmuseum.org/srinst.htm 4. www.taswegian.com/srtp/javaslide/javaslide.html 5. www.eminent.demon.co.uk /sliderul.htm 6. www. oughtred.org 7. groups.yahoo.com/group/sliderule 8. www.sphere.bc.ca/test/sruniverse.html ERIC MARCOTTE (top); RICK FURR (bottom) 92 2006.06