The "Dodo-Postcards" watermark is NOT on the actual card – it is an online watermark only.
Upper Spiral Tunnel. Field. Byron Harmon. No 131
lower Spiral Tunnel Field. Byron Harmon
Lower Spiral Tunnel Field. Byron Harmon. B. Hopkins
Lower Spiral Tunnell Field. Byron Harmon. No 135
Lower Spiral Tunnel. Field. 135. Byron Harmon
Field. Lower Spiral Tunnel. Byron Harmon
Lower Spiral Tunnel. Byron Harmon
General View of New Grade Reductions. Loops and Spiral Tunnels Field. Canadian Rockies. Valentine
