Geodetic Operations in the United States, 1903-1906 (1906-1909, Etc.) A Report to the Fifteenth (sixteenth, Etc.) General Conference of the International Geodetic Association. By O.H. Tittmann ... and John F. Hayford
The Geodetic Evidence of Isostasy, With a Consideration of the Depht and Completeness of the Isostatic Compensation and of the Bearing of the Evidence Upon Some of the Greater Problems of Geology
Hypsometry. Precise Leveling in the United States, 1903-1907. With a Readjustment of the Level Net and Resulting Elevations. By John F. Hayford ... and L. Pike