Railroad Archives Online
- FondD0504b - Al Christianson Collection - Friends of the Burlington Northern Railroad
- Sorozat001 - Burlington Northern Railroad Company
- Alsorozat014 - Photographs
- 001 - Railroads--Equipment and Supplies
- 002 - Diesel Locomotives
- IratdarabChristianson000008 - Burlington Northern Diesel Locomotive Number 1 at Fargo, North Dakota in 1981
- IratdarabChristianson000009 - Burlington Northern Diesel Locomotive Number 101 and Precision National Diesel Locomotive Number 1832 in Saint Paul, Minnesota in 1980
- IratdarabChristianson000010 - Burlington Northern Diesel Locomotive Number 101 in Minneapolis, Minnesota in 1979
- IratdarabChristianson000011 - Burlington Northern Diesel Locomotive Number 108 in Minneapolis, Minnesota in 1979
- IratdarabChristianson000012 - Burlington Northern Diesel Locomotive Number 108 in Minneapolis, Minnesota in 1979
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