- Collection2013.6 - David Davies Railway Collection
- Series2013.6.10 - Locomotives
- Subseries2013.6.10.2 - Diesel Locomotives
- File2013.6.10.2.1 - Diesel locomotives evolution, progression, comparisons, and builders
- File2013.6.10.2.2 - CPR diesel locomotives
- File2013.6.10.2.3 - CNR diesel locomotives
- File2013.6.10.2.4 - BC Rail diesel locomotives and others
- File2013.6.10.2.5 - Budd cars and earlier self-propelled coaches
- File2013.6.10.2.6 - Miscellaneous topics related to diesel locomotives
- 3 more...