March 1966, The Library of Congress Legislative Reference Service- How to Secure Additional Information About Your SubjectMarch 1966Library Of Congress. Legislative Reference Service.https://creativecommons.org/publicdomain/mark/1.0/enghttp://congressarchives.org/record/EMD_Working_Papers-f363-undated_1966_03Legislative Reference Service Guide To Finding Sources About Your Subject. Suggestions Include: Books, Encyclopedias, Magazine And Newspaper Articles, Yearbooks, Handbooks, Statistical Sources, Book Reviews, Biographical Information, And Federal Government Documents