traveling through the region. He discovered rich fossil beds along Bridge Creek and near Sheep Rock in 1865. Condon's trips to the area and his public lectures and reports about his finds led to wide interest in the fossil beds among scientists such as Edward Drinker Cope of the Academy of Natural Sciences. One of them, paleontologist Othniel C. Marsh of Yale, accompanied Condon on a trip to the region in 1871. Condon's work led to his appointment in 1872 as Oregon's first state geologist and to international fame for the fossil beds. Specimens from the beds were sent to the Smithsonian Institution and other museums worldwide, and by 1900 more than 100 articles and books had been published about the John Day Fossil Beds. During the first half of the 20th century, scientists such as John C. Merriam, Ralph Chaney, Frank H. Knowlton, and Alonzo W. Hancock continued work in the fossil beds, including those discovered near Clarno in about 1890. Remote and arid, the John Day basin near the fossil beds was slow to attract homesteaders. The first settler in what became the Sheep Rock Unit is thought to have been Frank Butler, who built a cabin along the river in 1877. In 1881, Eli Casey Officer began grazing sheep on a homestead claim in same general area. His son Floyd later lived there with his family and sometimes accompanied Condon on his fossil hunts. In 1910, James and Elizabeth Cant bought from the Officer family. and converted it to a sheep ranch, which was eventually expanded to a sheep-and-cattle ranch of about . Merriam, a University of California paleontologist who had led expeditions to the region in 1899 and 1900, encouraged the State of Oregon to protect the area. In the early 1930s the state began to buy land for state parks at Picture Gorge, the Painted Hills, and Clarno that later became part of the national monument. In 1951 the Oregon Museum of Science and Industry established Camp Hancock, a field school for young students of geology, paleontology, and other sciences, on public lands surrounded by what would later become the Clarno Unit. In 1974 Congress authorized the National Park Service to establish the national monument, and President Gerald R. Ford signed the authorization. After the State of Oregon had completed the land transfer of the three state parks to the federal government, the monument was