1921 First Yosemite Museum installations made. USNPS, 1921, pp. 72, 196, 202; Yosemite Park Naturalist, July, 1921; Hall, 1930. 1922 Yosemite Educational Department created. USNPS, 1922, pp. 113, 115; 1923, p. 20. _Yosemite Nature Notes_ first published (mimeographed through 1924, then printed). YNHA, 1925, p. 1. 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. 1924 Hoof and mouth disease epidemic in Yosemite deer. USNPS, 1924, pp. 36, 108; 1925, pp. 6, 93; 1926, p. 14. New administration center and village developed. USNPS, 1924, pp. 37, 108; 1925, p. 87. 1925 Yosemite Park and Curry Co. formed by consolidation of Curry Camping Co. and Yosemite National Park Co. Tresidder, D. B., p. 37; USNPS, 1925, p. 27. Yosemite School of Field Natural History organized. USNPS, 1925, pp. 11, 90; YNHA, 1925, pp. 9-10, 16, 66. Glacier Point branch of Yosemite Museum opened. Yosemite Park Naturalist, June, 1925, YNHA, 1925, p. 55. 1926 All-year highway dedicated July 31. USNPS, 1926, pp. 30, 102. Yosemite Museum opened, May 29. USNPS, 1924, pp. 8, 105; 1925, pp. 12, 89; 1926, pp. 31, 99; YNHA, 1924, 1926, p. 95. 1927 Ahwahnee Hotel opened by Yosemite Park and Curry Co. USNPS, 1926, pp. 31, 101. 1928 Board of expert advisors, Frederick Law Olmsted, Duncan McDuffie, and John P. Buwalda, appointed by authority of Congress to study and assist in the solution of Yosemite problems. USNPS, 1928, p. 173. Maria Lebrado, one of the last of the original Yosemite Indians, gives firsthand account of Yosemite Valley discovery. YNHA, 1928, pp. 41-46; 1929, pp. 69-70, 85-86. Wildlife research in national parks instituted by George M. Wright, of Yosemite naturalist organization. YNHA, 1929, p. 66; Russell, 1939, p. 10; Wright, Dixon, and Thompson. W. B. Lewis transferred to Washington; became Assistant Director, National Park Service. E. P. Leavitt designated Acting Superintendent. YNP, 1929. 1929 A hospital, which after the death of Assistant Director Lewis, 1930, was named the W. B. Lewis Memorial Hospital, was constructed in Yosemite Valley at cost of $50,000. USNPS, 1929, p. 144. Col. C. G. Thomson appointed Superintendent. YNP, 1929. 1930 Stephen T. Mather dies, January 22. Story.