Captions: Trucking mammoth concrete buckets in the 50 ft. dia. tunnels at Hoover Dam, Oakes 228; The Grand Canyon bridge, Arizona [postcard]; Catwalk across Colorado [River]; Colorado [River] from lookout point;
Captions: Fallen monarch Mariposa Forest; Grizzley giant 104 Ft in circ 224 ft high 100 ft first limb 6 1/2 ft diam 1,000,000 ft lumber 8000 years old; California tree.
Girls posing for their picture: Front row (from left to right)- [unidentified], Rowena and Audrey Brinley, Hazel Higgins. Back row- Betty baker, Martha Scott, Jeanie Honrath.