"In free governments the rulers are the servants and the people are their superiors and sovereigns."
-- Benjamin Franklin
In Buford v. Houtz, 18 P.633 (1888) the Supreme Court of Utah held that seven prior existing roads criss-crossing an area 40 by 36 miles gave established sheep ranchers an easement to cross over and graze their sheep over checker boarded patented and government land. The use thereof was not a trespass. In Buford v. Houtz, 133 U.S. 320 (1890) the Supreme Court of the United States affirms the above decision of the Utah Supreme Court. The Utah Supreme Court also held the same in Lindsay Livestock & Land Co. v. Chumos, 285 P.246 (1930) specifically citing Act of July 26, 1886. In United States v. Andrews, 179 U.S. 96 (1900) the Supreme Court of the United States held that a "cattle trail" is an easement and a "highway" for the purpose of crossing a federally established reservation, and the use thereof was not a trespass.
http://supreme.justia.com/us/133/320/case.html
Also see ADAMS v. U.S., 319 U.S. 312 (1943) 319 U.S. 312; ADAMS et al. v. UNITED STATES et al. No. 889. Argued May 10, 1943. Decided May 24, 1943.
http://caselaw.lp.findlaw.com/scripts/getcase.pl?court=US&vol=319&invol=312