Guide to Reference Books. (Seventh Edition.) By Constance M. Winchell ... Based on the Guide to Reference Books, Sixth Edition, by I.G. Mudge
7th Edition. Guide to Reference Books. Supplement, 1950-1952, by Constance M. Winchell,... and Olive A. Johnson,... [ - 2nd Supplement, 1953-1955, by Constance M. Winchell,... - 3rd Supplement, 1956-1958, by Constance M. Winchell,... Assisted by John Neal Waddell,... and Eleanor Buist,... - 4th Supplement, 1959-June 1962, by Constance M. Winchell,... Assisted by John Neal Waddell,... Eleanor Buist,... Eugene P. Sheehy,...].
Reference Books of 1935-1937. An Informal Supplement to Guide to Reference Books, Sixth Edition. By I.G. Mudge. (Reference Books of 1938-40, 1941-1943, 1944-46. By Constance M. Winchell. Second-fourth Informal Supplement.).