Report of the Nicaragua canal commission, 1897-1899
United States. Nicaragua Canal Commission (1897-1899)
Mr. Boyd Ehle was directed to make a survey for a dam at Tambor Grande and an embankment southward to the Costa Rican highland. The following assistants were assigned to him: O. A. F. Saabye, E. G. Heyl, L. S. Snyder, " T. F. Boltz.