Notes: A twenty-page catalog of Bausch and Lomb microscopes and equipment focused on mining uses. MASSCO is the Mine and Smelter Supply Company.
6 by 9 inches. Saddlestapled pamphlet.
Edition + Condition: Some spotting to the first page, else near fine in self-wrappers. A previous owner has handwritten the date "Mar. 20, 1921" on the cover.
Publication: (N.-pl.): MASSCO, (n.d. but ca. 1921).
Item No: #307860