United States Forest Service, 1957 No. 9: 65; 1958: 65; 1959: 23, 55; 1961: ii; 1962: 44, 64, 168; 1963: 55; 1964: 5, 78; 1969: 84; 1970: 45, 46; 1977: 30, 33; 1978: 30, 70 photo, 101, 102; 1981: 80, 135-138 photos; 1983: 13, 15, 16, 17, 18, 23, 92, 93, 96; 1986: 14, 66; 1987: 9, 26, 27, 28, 66, 88, 89; 1989: 7, 50; 1990: 52, 124; 1991: 90, 139, 143; 1994: 30, 38; 1996: v, vi, 37, 39, 44; 1997: 121, 129, 138, 152, 191, 195, 220-222, 222-223; 1998: 11; 2005: 65, 66, 74, 122; 2007: 38; 2017: 61, 88, 109, 111, 112, 116, 126, 129, 139, 147, 153
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