Historic California Posts, Camps,
Stations and Airfields
Mariposa Auxiliary Field
(Mount Bullion Airport, Mariposa
County Airport)
Mariposa Auxiliary
Field, 1943
US Army Corps of Engineers Sacramento
District History (1993)
Location: Located in Mariposa County, 5.5 miles northwest
of Mariposa, California
Site History: In 1942, the War Department acquired 60.442
lease acres from the County of Mariposa, 0.364 lease acre from
John Marre, and 1.388 lease acres from Richard and Willa May
Morrissey. The total acreage acquired for the site was 62.194.
The property acquired from Mariposa County existed as the Mariposa
County Airport prior to the U.S. lease, which was built around
1937. The remaining leased acreage was used as an easement to
a radio beacon located on BLM property atop Mount Bullion. The
site was used by the Army Air Forces as an emergency landing
field and auxiliary to the Merced Army Air Field, since the site
is located at an altitude above the typical valley fog layer.
Aside from the radio beacon, no Army constructed improvements
were identified. Improvements existing at the time of the lease
included a hangar, gasoline fueling equipment, a runway, lighting,
and a small cabin. In 1945, 62.194 lease acres were terminated.
Available records do not indicate if restoration was required
or if any recapture provisions existed in the lease. The current
land owners include the State of California, the Bureau of Land
Management (BLM), the County of Mariposa, and five private parties.
The site has also been known as Mount
Bullion Airport; Mariposa County Airport; and Mariposa Yosemite
Airport.
Extract, US Army Air Forces Directory
of Airfields, January 1945
Corps of Engineers Real Estate Map
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