From the plaque:
Garcés used the Oak Creek Pass in 1776 to return to the
Mojave after exploring the San Joaquin Valley, as did
Frémont in 1844-1845. Until the building of the railroad
through the Tehachapi Pass in 1876, Oak Creek Pass was
the only route used through the Tehachapi Mountains.
Dedicated June 8, 1937. Bakersfield Parlor No. 42 N.S.G.W., Bakersfield Parlor No. 239, N.D.G.W., Kern County Historical Society, Kern County Chamber of Commerce, Department of Natural Resources