Vintage Math Tables Book & Canadian Industrial Booklet

Great find for collectors of vintage books, mid-century engineering tools, or Canadian industrial history! Selling these two reference booklets as a bundle: 1 Four-Figure Mathematical Tables by Frank Castle (Published by Macmillan and Co., London). A vintage pre-calculator reference booklet used by mechanics, engineers, and students. Shows typical vintage wear and minor pen markings on the cover, but all pages are completely intact and readable. 2 Tables of Conversion Factors Weights and Measures Booklet – Issued by the Dominion Steel and Coal Corporation Limited (DOSCO), based out of the Canada Cement Building in Montreal. Features a vintage ink stamp on the front. A rare piece of 20th-century Canadian industrial ephemera.