Condra, Geo. E. 1869-1958. The Redfield anticline of Nebraska and Iowa, by G. E. Condra and E. C. Reed. - [Lincoln] Published by authority of the state of Nebraska, 1938. - 19 p. "List of references": p. 18-19. LCCN: gs 39000114 Subjects--Topical Terms: Geology--Nebraska.Geology--Iowa. LC Class. No.: QE135 / .A43 no. 12