Diagram of the various water tank types used on Baldwin logging Mallets
Sinnemahoning Valley Railroad #3 "Edward T. Johnson" - Before Baldwin found success with the logging Mallet, they tried several other unsuccessful designs in an attempt to capture part of logging railroad market. This was one of them.
American Mallets built for export - A section dealing with some of the interesting little Mallets that were built by North American companies for use throughout the world.
Surviving Steam in Oregon - A page with some pictures and information on some of the locomotives I have seen during a couple trips through Oregon.