The decade of the 1930’s was one of extensive development for the monument. Although the Nation was in the throes of the Great Depression, considerable sums of money as well as manpower were made available for public works through the various relief agencies. Working under the supervision of the National Park Service, these agencies, particularly the Civilian Conservation Corps, inaugurated an extensive development program at the monument. Practically all of the improvements prior to 1956 were the results of their efforts. New roads were built, modern water and electrical systems installed, footpaths were laid out, picnic areas were established with tables and comfortable benches, and trailer and overnight camping areas were provided the visitors. Residences for employees, workshops and machine shops were erected. In 1938 a museum of sturdy log construction was completed. The result of the improved roads and visitor facilities at the monument is reflected in travel records. During the ten-year period from 1931 to 1941, in spite of the Great Depression, the number of visitors practically tripled. In 1931 the count was 11,000; in 1936, 26,503; in 1941, 32,951. In the early 1930’s, the first full-time custodian was stationed at the monument. This was George C. Crowe, who previously had been a Ranger-Naturalist at Yosemite National Park in California. Crowe served from April or May 1931 until March 1932 when he was transferred to Yellowstone National Park as Assistant Park Naturalist. Newell F. Joyner, who earlier had seen service at Yellowstone as Ranger and Naturalist succeeded Crowe as Custodian. Joyner served in this capacity for 15 years. The big annual event each year at the monument, the Pioneers’ Picnic, had its origin at this time. Although old-timers frequently met at the Tower prior to that time, it was not until 1932 that they formally organized. In that year, the Northern Black Hills Pioneer Association came into being. Its membership was limited to people who had resided in that section for at least 35 years. On one day each year, usually in June, an open house is held in remembrance of this occasion.