- 1Carroll Harvey Wegemann; K. C. Heald
The Healdton oil field Carter County, Oklahoma
Washington, D.C.: Gov. Print. Off. 1915; Seite 14 - 30; Ill., graph. Darst. - 2K. C. Heald
The oil and gas geology of the Foraker quadrangle osage county, Oklahoma
Washington, D.C.: Gov. Print. Off. 1916; IV S., S. 17 - 47; Kt.