Railroad Archives Online
- FondoD0011 - James M. Fredrickson Collection
- Serie010 - Other Railroads
- Sottoserie014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 006 - Cabooses (Railroads)
- Unità documentariaJMF11-09881.0 - Curtis Millburn & Eastern Steel Caboose Number 1206 at Millburn, Washington in July 1976.
- Unità documentariaJMF11-10031.0 - Lewis & Clark Railway Steel Caboose Number 430 at Moulton Falls, Washington in October, 1988.
- Unità documentariaJMF11-10071.0 - Mccloud River Railroad Steel Caboose Number 101 at Mccloud, California in August, 1977.
- Unità documentariaJMF11-10072.0 - Mccloud River Railroad Steel Caboose Number 101 at Mccloud, California in August, 1977.
- Unità documentariaJMF11-10073.0 - Mccloud River Railroad Steel Caboose Number 101 at Mccloud, California in August, 1977.
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