Front:
The World's Greatest Stack
and Sectional View of Boston
& Montana Copper Smelter.
Height of Stack 506 ft.
small Stack 174 ft.
Great Falls, Mont.
XIX
Au m
Photo by M.L.DeLong
Al
No. 201
****
********
1888
Back:
Ridgley Calendar Co., Great Falls, Montana.
400
MERE
