1923
Hikers’ camps installed. USNPS, 1923, p. 54; 1924, pp. 37, 109; YNHA, 1923; Tresidder, D. B., p. 80; Adams, 1940, pp. 79-83; Russell, 1925.
Educational Department for all national parks created. Yosemite Park Naturalist; USNPS, 1923, p. 20; 1925, p. 10; 1926, p. 7; Burns, N. J., pp. 4-25.