W. L. Turnbull

title	ISBN-13 (ISBN-10)	year of publica- tion	other author(s)
American History: A Problems Approach	978-0-03-086566-4 (0-03-086566-2)	1971	H. L. Crow
American History: v. 1: A Problems Approach	978-0-03-081382-5 (0-03-081382-4)	1971	H.L. Crow