Grand Army of the Republic and Kindred Societies - a Guide from the Library of Congress
Grand Army of the Republic Records Project
Colorado: Complete Roster of Members of the GAR Department of Colorado & Wyoming, 1895 (Internet Archive)
District of Columbia: Complete Guide & Directory for Members of the GAR, 1892 (Internet Archive)
Illinois, Illustrated Roster of the Dept. of Illinois GAR, 1914 (Internet Archive)
Iowa, Grand Army of the Republic Membership Records 1861-1949 (FamilySearch)
Minnesota Grand Army of the Republic Membership Records, 1869-1940 (FamilySearch)
Oregon, Grand Army of the Republic membership Records 1870-1930 (FamilySearch)
Pennsylvania, Grand Army of the Republic Membership Records 1865-1936 (FamilySearch)
South Dakota, Grand Army of the Republic Membership Records 1861-1941 (FamilySearch)
Utah, Grand Army of the Republic Membership Records, 1879-1934 (FamilySearch)
Wyoming: Complete Roster of Members of the GAR Department of Colorado & Wyoming, 1895 (Internet Archive)