THE USE OF THE SLIDE RULE + THE QUICK AND EASY "LAWRENCE" SLIDE RULE INSTRUCTION BOOK + THE VERSALOG SLIDE RULE: AN INSTRUCTION MANUAL. 3 SLIDE RULE-RELATED ITEMS. by Cullimore, Allan R.; Poland, John; Fiesenheiser, E.I., et al

New York / Peru, Indiana / Canada : Keuffel & Esser / Lawrence engineering Service / Hughes Owens Three slide rule-related items. 1. The Use of the Slide Rule - 9" H, hard cover (brown cloth with gilt lettering on front board), 1915, 36 pp, + 4 pp advertising. B&w illustrations. 2. The Quick and Easy "Lawrence" Slide Rule Instruction Book - 8 1/2" H, soft cover (stapled in pictorial wraps), 1940, 28 pp. B&w illustrations. 3. The Versalog Slide Rule: An Instruction Manual - 8 1/4" H, hard cover (gray cloth with dark blue lettering on spine and front board), 1954m 115 pp. B&w illustrations. 1. Light toning to pages and endpapers, light wrinkling on the spine, a few light rub marks on the rear board. 2. Light browning to pages, very small crease at bottom corner with tiny piece missing from the front cover, a few small edge tears on the covers - archivally taped, staple area on the cover has been repaired with archival tape, minor soft crease at the top of the book. 3. Very slight lean to the spine, tiny dent on the top edge of the front board, minor edge wear, light wrinkling at the top/bottom of the spine, small light scuff on the front board.. Mixed: Hard Cover & Soft Cover. Very Good-/No Dust Jackets.