Heydecker, C. T. (1925). Genealogy of the Heydecker family: Containing the historical accounts of the family, as found in the records at Vienna and Kempten, Germany, Together with the genealogy commencing with the year 1634, to the present time. Waukegan, Ill.: [s.n.].

Heydecker, Christian Townsend. Genealogy of the Heydecker Family: Containing the Historical Accounts of the Family, As Found in the Records At Vienna and Kempten, Germany, Together With the Genealogy Commencing With the Year 1634, to the Present Time. Waukegan, Ill.: [s.n.], 1925.

Heydecker, Christian Townsend. Genealogy of the Heydecker Family: Containing the Historical Accounts of the Family, As Found in the Records At Vienna and Kempten, Germany, Together With the Genealogy Commencing With the Year 1634, to the Present Time. Waukegan, Ill.: [s.n.], 1925.