SLIDE RULES, KEUFFEL AND ESSER CATALOGUES AND MANUALS, 31 VOL.

i. Cox, William. The Mannheim slide rule. Complete manual with table of settings, equivalents and gauge points. [1891], [T&W C194]ii. Idem. The Mannheim (complete manual) and the duplex slide rules. [1891], [T&W C195]iii. Idem. The Mannheim and the duplex slide rules. Complete manual. [1917], [T&W C192]iv. Idem. The Mannheim and polyphase slide rules (Mannheim type). Complete manual. [1920], [T&W C193]v. Thacher, Edwin (b.1839). Directions for using Thacher's calculating instrument. 1914, [T&W T20; cf. Origins of Cyberspace 381 (edition 1907)]vi. Cullimore, Allen Reginald (1884-1956). The use of the slide rule. [1915], inscribed by the author, [T&W C207]vii. Keuffel & Esser Co. Catalogue of the Keuffel & Esser Co. 1921, [T&W K34]viii. Idem. Elementary instructions for operating the slide rule. Mannheim type. [1928], [T&W K35]ix. Idem. K & E slide rules and calculating instruments. [1934], [T&W K36]x. Idem. The log log trig slide rule no.4090. A self teaching manual. [1936], [T&W K38]xi. Idem. K & E slide rules and calculating instruments. [1939], [T&W K37]xii. Breckenridge, William Edwin (b.1869). Mannheim slide rule. A self teaching manual. [1924], [T&W B236]xiii-xiv. Idem. The polyphase duplex slide rule. A self teaching manual. [1924], 2 copies, [T&W B239]xv-xvi. Idem. The polyphase slide rule. A self teaching. [1925], 2 copies, [T&W B241]xvii. Idem. The log log duplex slide rule. [1926], [T&W B235]xviii. Idem. The Mannheim slide rule. [1927], [T&W B237]xix. Idem. The Mannheim slide rule, nos. 4031S, N4035S, N4041 and 4051. [1938], [T&W B238]xx. Idem. The polyphase slide rule no. 4088. [1938], [T&W B240]xxi. Idem. The polyphase duplex slide rule no. N4053. [1938], [T&W B242]xxii. Kells, Lyman Morse (1888-1980), Kern, Willis Frederick (1903-1959), and Bland, James R. The log log duplex trig slide rule no. 4080. A manual. [1939], [T&W K16]xxiii. Idem. The polyphase duplex trig slide rule no. 4070. A manual. [1939], [T&W K17]xxiv. Idem. K + E polyphase duplex decitrig slide rule no. 4071. A manual. [1939], [T&W K12]xxv. Idem. The log log duplex decitrig slide rule No. 4081. A manual. [1942], [T&W K14]xxvi. Idem. The log log duplex decitrig slide rule No. 4081. A manual. [1943], [T&W K15]xxvii. Idem. K + E slide rules. A self instruction manual. For use with the following K&E slide rules: Log log duplex decitrig no. 4081. Jet log duplex decitrig no. 4181. [1955], [T&W K13]xxviii. Idem. K + E slide rules. A self instruction manual. For use with the following K&E slide rules: Log log duplex decitrig. Jet log duplex decitrig. [1955], [not in T&W]xxix. Weinbach, Mendell Penco (1881-1947). K & E log log duplex vector slide rule no. 4083. A supplementary manual. [1939], [T&W W21]xxx. Cooke, Nelson Magor (1903-1965). K & E Cooke radio slide rule. [1942], [T&W C171]xxxi. Bishop, Calvin Collier (1882-1971), Harris, Charles O. (1909-1990) and Keuffel & Esser Co. Slide rule; K&E slide rule manual; Slide rule. Tehran, n.d., 3 parts in one, all in Arabic, [T&H B171, H16] 31 volumes, all 8vo, all but the last published New York/Hoboken: Keuffel & Esser, all original wrappers or original cloth, a few worn

the condition of this lot is as described in the catalogue description
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."