Brown, Martin R. A guide to the grading of United States coins, by Martin R. Brown and John W. Dunn. - [4th ed.] - Racine, Wis., Whitman Pub. Co., 1964. - 206 p. illus. 20 cm. "No. 9096." Subjects--Topical Terms: Coins, American--Catalogs. LC Class. No.: CJ1826 / .B7 1964 Dewey Class. No.: 737.4973