Published by Canadian Watchman Press, Oshawa, 1920, believe a 1933 reprint.  Hard cover, 295 pages including answer section.  Green cloth over boards with blocked title, Ontario Coat of Arms and lettering in black on front board, black lettering on spine.  Corners and spine ends show a bit of wear, a few small spots of soil on front and spine.  Binding very good; a few scrapes on top and bottom page edges.  Interior pages clean and unmarked with lightly toned pages; no prior owner/school markings, no tears; very gently used.  Covers Addition, Subtraction, Division, Multiplication, Numbers, Factors, Divisors, Fractions, Measurements, Percentages, Decimals, Taxes, Duty, Interest, Banking, Commission, Accounts, Interest, Stocks, Square Root, with exercises for each section and answers at the rear.