Title | Date | Type | ||
---|---|---|---|---|
51 | Seeley Creek Camp, F-50, driving Caterpillar bulldozer | 1937; 1933; 1934; 1935; 1936; 1938; 1939; 1940; 1941 | Image | |
52 | Seeley Creek Camp, F-50, overlooking bulldozer's work | 1937; 1933; 1934; 1935; 1936; 1938; 1939; 1940; 1941 | Image | |
53 | Zion National Park Camp, rock screening and crushing plant | 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942 | Image |