"Long Ravine Bridge from below, 120 feet high." (Stereograph 42)
Verso of, "Long Ravine Bridge from below, 120 feet high." (Stereograph 42)
"Secret Town, Trestle from the West, Length 1,100 feet." (Stereograph 48)
Verso of, "Secret Town, Trestle from the West, Length 1,100 feet." (Stereograph 48)
“Secret Town, Trestle from the East, Height 90 feet.” (Stereograph 49)
Verso of, “Secret Town, Trestle from the East, Height 90 feet.” (Stereograph 49)