Reading further:
"The partners got their horses back, but it didn't do them any good. The Governor immediately ordered their arrest on a charge of treason, (outfitting and arming an army without consent).
Cap and Joel spent eight months in prison before they were released. By the time they got their freedom their horses were scattered all over the West."
The 9-11-1874 Arizona Weekly Miner reported a Joel McKee was listed as one of several delinquent shareholders of Lone Star Mining Company assessment #10, that were to be sold at public auction at Mineral Park, Mohave Co, Arizona Territory in Oct 1874.
Mineral Park info, with photos and history:
http://www.ghosttowns.com/states/az/mineralpark.html
and:
http://www.waymarking.com/waymarks/WM3GMJ
It may be possible to track down more letters like the one Joel wrote to his cousin Cassie McKee Linder, mentioned above.
Fran Bolton