Antelope Peak Station, a later Butterfield Overland Mail station located 15.14 miles east of Mission Camp, at the foot of Antelope Peak.

The Overland Mail Company replaced Filibusters Camp, because Antelope Peak Station had a better water supply.

[3]: 158  The station was built by John Kilbride in 1857 but did not appear on the stagecoach itinerary until 1859.

[4] Before the Butterfeild Line, in 1857, Antelope Peak was nearby the location of one of the water and camp sites of the San Antonio–San Diego Mail Line between its stations at Maricopa Wells and Jaeger City, California, location of Fort Yuma Station, which was also the site of the ferry across the Colorado River just down river from Fort Yuma.

[5] Given the proximity to grass near the mountain referred to below and the Gila River nearby it made a good overnight camp.