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TitleDateType
126 Forest Service and Military personnel studying the 75mm recoilless rifle.1966-02Image
127 Forest Service and Military personnel studying the 75mm recoilless rifle.1966-02Image
128 Forest Service and Military personnel studying the 75mm recoilless rifle.1966-02Image
129 Forest Service and Military studying 75 mm sites.1966-02Image
130 Forest Service rope top and gun tower looking northeast from the parking area.1964-06Image
131 Forest Service Supervisor, F.C. Koziol, and area owner, Zane Doyle, examining 75mm recoilless rifle casing used in avalanche control work.1963Image
132 Fracture line at snow defense structure.1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969Image
133 Fracture line on lower Mt. Baldy shoulder1955Image
134 Fracture line on Mt. Baldy shoulder1955Image
135 Fracture line on Mt. Baldy shoulder1950; 1951; 1952; 1953; 1954; 1955Image
136 Fracture line on Mt. Baldy shoulder1948Image
137 Fracture line running through snow defense structures.1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969Image
138 Fracture line running through snow defense structures.1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969Image
139 Fracture line running through snow defense structures.1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969Image
140 Gropel type snow which provided the sliding base for an avalanche.1968Image
141 Group discussion at Avalanche School1959Image
142 Group discussion at Avalanche School1959Image
143 Group snapshot of the Avalanche School participants1959Image
144 Group snapshot of the Avalanche School participants.1959Image
145 Interior of a building hit by an avalanche.1964Image
146 Interior of a building hit by an avalanche.1964Image
147 Interior of a building hit by an avalanche.1964Image
148 Interior of a building hit by an avalanche.1964Image
149 Keith Langson of the National Ski Patrol pointing to a deposit area in the canyon below.1968Image
150 Large artillery piece used in avalanche control.1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949; 1950; 1951; 1952; 1953; 1954; 1955; 1956; 1957; 1958; 1959; 1960; 1961; 1962; 1963; 1964; 1965; 1966; 1967; 1968; 1969Image
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