Thomas B. Helm

• History of Hamilton County, Indiana
• History of Carroll County, Indiana
• History of Delaware County, Indiana
• History Of Madison County, Indiana
• Complete name index of History of Wabash County, Indiana
• History of Allen County, Indiana
• History of Hamilton County, Indiana, with illustrations and biographical sketches of some of its prominent men and pioneers, to which are appended maps of its several townships
• History of Madison County, Indiana, with ... biographical sketches ...
• Index to Carroll County history, 1884