Preliminary report on the underground waters of a part of southeastern Colorado - Coffin, R. C. (Reuben Clare), 1886-1972.; Tieje, Arthur Jerrold, 1889- (Denver, Col., Eames brothers, state printers, 1921)
. - Ground waters of parts of Elbert, El Paso, and Lincoln counties, by R. C. Coffin. - Underground waters of parts of Lincoln and Crowley counties, by A. J. Tieje.
At head of title: Colorado Geological survey, R. D. George, state geologist.
Keywords: Water-supply -- Colorado