- Collection2013.6 - David Davies Railway Collection
- Series2013.6.31 - Industrial Railways
- Subseries2013.6.31.1 - Industrial Locomotives
- File2013.6.31.1.1 - Industrial railway locomotives (steam and diesel)
- File2013.6.31.1.2 - "Industrial Locomotives"
- File2013.6.31.1.3 - Geared industrial railway locomotives: Shay
- File2013.6.31.1.4 - Geared industrial railway locomotives: Climax
- File2013.6.31.1.5 - Geared industrial railway locomotives: Heisler
- File2013.6.31.1.6 - Porter locomotives
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