I use many of the historic photos to build my virtual model of the Gilpin
Tram. Below are some of these pictures along with the same scene
from my Virtual Gilpin as comparison. 

Looking west past Sampling Works in lower Black Hawk, MP
35.2


Looking west at New York Mill in lower Black Hawk, MP 35.5


Looking north at Hidden Treasure Mill above Black Hawk, MP
36.7

Avon Mine and Mill just east of Nevadaville, MP 40.92