The Tom Russo Reference Library of Office Equipment, c. 1800-198

A comprehensive archive of books and technical manuals, operator manuals and original reference material covering typewriters, calculators, cash registers, telecommunication and many additional subjects. The archive comprises approx. 3,000 advertising brochures, 250 reference books, 815 pamphlets, 27 U.S. patents, 36 licenses and legal documents, 1,000 pieces of sales promotional material, 1,345 periodicals and magazines, 270 glossy prints, 190 postcards and 2,700 unsorted advertising pieces. The bulk of the material is stored in acid-free archival boxes inside around 110 moving boxes. - A world-class reference archive for collectors, historians or institutions in the field of office antiques, communications technology or early American industrial history! - A unique opportunity to establish a monument of human history! - The photos show only a small selection of this extensive and multi-faceted archive.

布雷克拍品等级是为了方便竞买人判断拍卖品的成色而设置的。布雷克等级用1到6级来标注外观和功能的成色，(从非常好到非常差)。 在目录图册里用括号里的2个数字来表示，前一个数字表示外观成色的级别，后一个数字表示功能成色的级别。如(3/2)表示外观成色是3(满意的)，功能成色2(好)。 成色 定义参照下列标准： 1 - 非常好 (未使用过，没有使用痕迹) 2 - 好 (新，极少的使用痕迹) 3 - 满意的 (普通的使用痕迹) 4 - 及格的 (明显的使用痕迹，某个非主要部件是后配的) 5 - 有缺陷的 (极明显的使用痕迹, 某个主要部件是后配的，功能上有缺陷，需要修理) 6 - 非常差 (严重破损, 缺少重要部件)