1930-33 School House built in Nipton. Made of concrete with galvanized steel roof, Harry Trehearne believed to be instrumental in this construction. Correspondence of the period indicates that Trehearne was the registered "Clerk" of the then established School District. Costs of construction are indicated as $18,000.

1934 Controversy over School House located on Settlement Claim No. 022952. Residents and voters from the Cima and Kelso precinct of S.B.Co. file protests with the U.S. Land Office regarding the inclusion of the lands underlying the school house within the Settlement Claim. Trehearne deeds school house land (100' by 200') to the Cima School District, Deed dated August 16, 1934.

1935 Second Homestead Entry No. 022952 filed in Sacramento by Harry Trehearne dated August 1 on 120 acre site known as Nipton, California.

1937-40 Under Trehearne direction, original water well dug by hand, in miners manner of sinking a shaft, to a depth of 550 feet below surface.

1940 Pump installed in water well: 8 gpm capacity 1940 President Franklin D. Roosevelt signed Patent papers transferring title of Nipton site to Harry Trehearne on April 10, 1940.