- Collection2013.6 - David Davies Railway Collection
- Series2013.6.36 - Photographs
- Subseries2013.6.36.3 - Postcards
- File2013.6.36.3.03 - Canadian Pacific Railway - Spiral Tunnels Near Field, BC
- 13 more...
- Item2013.6.36.3.03.14 - General view of new grade reduction loops and spiral tunnels, Field, Canadian Rockies
- Item2013.6.36.3.03.15 - Lower spiral tunnel, Field
- Item2013.6.36.3.03.16 - The Spiral Tunnels
- Item2013.6.36.3.03.17 - Spiral tunnel, near Field, in which trains make a complete turn, Canadian Rockies
- Item2013.6.36.3.03.18 - The Spiral Tunnels, Yoho National Park, B.C.
- Item2013.6.36.3.03.19 - Mt. Stephen
- Item2013.6.36.3.03.20 - Lower Spiral Tunnel
- Item2013.6.36.3.03.21 - Tunnel, Field, B.C.
- Item2013.6.36.3.03.22 - Spiral Tunnels
- 2 more...