My principal employer was Mr. Samuel A. Maverick, of San Antonio, formerly from South Carolina. A run-away boy, he had joined an expedition of about twenty men, which invaded Mexico at the town of Mier prior to the Mexican war. The party was captured. The Mexicans put ten white beans in a bag with ten black ones, ordering them to draw a bean each. Those who got the black beans were immediately shot. Maverick began locating land soon after the war and became the largest land-holder in Texas, if not in the United States. He owned more cattle on the free public range than any other man in Texas. In 1861 nearly all the people went into the war. Maverick's cattle ran wild on the range, and, when the war closed there were tens of thousands of cattle bred during the four years. Maverick was the greatest claimant to these wild cattle, and marked them with his brand wherever caught. Other owners, and even men who had never owned cattle, would brand with their own marks such cattle as they caught unbranded. It thus became the custom among cattle owners using the free range to stamp as their own any unbranded cattle they found during the "round up," and to this day these stray cattle are known as "Mavericks." Maverick accompanied me on every surveying expedition I made, following my tracings and examining my notes. He expressed the greatest patriotism as a Unionist, was bitterly opposed to the then proposed secession, as were most Texans, including Governor Houston. When placer and quartz gold was discovered in the Penos Altos range of mountains in Arizona, near the present Silver City, Maverick requested me to find how valuable these mines were. With a gambler (Conklin) I bought a good two-horse team and traveled the hundred and fifty miles to reach these mines. At Penos Altos I met James R. Sipes, a clerk for Postmaster Dowell. I said, "Hello, Sipes, how is it; is there plenty of gold here?" He laughed and answered, "Mills, there is the greatest quantity of gold here, but there is too damned much dirt mixed with it!" which I found to be true. Locating a claim, I worked a month, 8,000 feet above sea level, where in the day it was scorching hot and at night freezing cold, and discovered that by hard work I could make about three dollars a day. Fortunately, I had brought my surveying instruments, so I abandoned mining and laid out the town of Penos Altos. I also surveyed many claims, about which there were constant disputes. But I soon returned to El Paso, reporting to Maverick that the mines were not of sufficient importance to interest him.