Railroad Archives Online
- CollectionD0063 - Walter W. Ainsworth Collection
- Series009 - Logging Railroads
- Subseries Level 1014 - Photographs
- Subseries Level 2003 - Railroads--Buildings and Structures
- Subseries Level 3010 - Miscellaneous Structures
- ItemWWASPSL8-062 - Benson Timber Company Log Dump at Clatskanie, Oregon, undated
- ItemWWASPSL8-064 - Hammond Lumber Company Store at Kerry, Oregon, undated
- ItemWWASPSL8-065 - Hammond Lumber Company Store at Kerry, Oregon, undated
- ItemWWASPSL8-091 - Mill Pond at Astoria, Oregon, undated