MECHANICAL CALCULATORS, 19TH CENTURY

i. Bollée, Léon A.A. (1870-1913). Sur une nouvelle machine à calculer, in Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences Vol. 109, July-December 1889, Séance du Lundi 11 Novembre, 1889. Paris: Gauthier-Villars et Fils, 1889, 4to, marbled boards, (bought from Hugues de Latude, 2005), [T&W Add7; Randell 1979 p.112]ii. Engelmann, Max (1874-1928). Philipp Matthäus Hahn. Berlin: Schmidt & Co., 1923, 8vo, original cloth, browning [not in T&W]iii. Lempe, A.J.L. Beschrijving en handleiding eener reken-machine met staafjes. Leiden: D. du Mortier en Zoon, 1839, 8vo, two hand-coloured folding plates, contemporary marbled boards, box [T&W L76]iv. [Patents.] Description des machines et procédés pour lesquels des brevets d'invention ont été pris ... année 1874. Tome XI. Instruments de Précision. Paris: Imprimerie Nationale, n.d., folio, five folding plates, stab stitched, plates loose, browning [T&W P24]v. [Patents.] Description des machines et procédés pour lesquels des brevets d'invention ont été pris ... année 1875. Tome XVII. ... Compteurs. Paris: Imprimerie Nationale, n.d., folio, four folding plates, stab stitched, browning [T&W P25]vi. [Patents.] Description des machines et procédés pour lesquels des brevets d'invention ont été pris ... année 1887. Tome LXIII. Instruments de Précision. Paris: Imprimerie Nationale, n.d., folio, 20 plates, disbound, browning [T&W P26]vii. [Troncet], Louis-J. (born c.1850). Arithmographie Troncet. Paris: Gautherin, n.d., 12mo, hand-written corrections, unbound leaflet as issued [T&W T53]

Condition is described in the main body of the catalogue, where appropriate.
"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."

These French patents of the 1870s record details of a number of calculating machines by Mayer, Richard, Lorenz, and others, that are not mentioned in reference books on the subject.