Crossing the timber line, Pike's Peak railwayBuy wall art of this image titled: Crossing the timber line, Pike's Peak railway, from the Vintage Photochrom Postcards Collection by Second Story Prints. Top quality print reproductions available now! Tags Mountain railroads. United States Colorado Pikes Peak. Notes Title from item. Detroit Publishing Co. no. "0019". Forms part of: Photochrom Print Collection. General information about the Photochrom Print Collection is available at http: hdl. loc.