Lava Beds National Monument, 1949 Yearbook: 48; 1957 No. 9: 9, 24; 1959: 74, 83; 1960: 77, 84; 1965: 81; 1970: 15, 17, 36 photo (1964, field trip); 1982: 55 photo (Captain Jack's Cave); 1990: 123; 1992: 102; 2005: 63, 64, 65 photo (winter), 68, 74, 120 photo, 121, 123; 2017: 144
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