So That's What Paul Bunyan Meant!
When reading the Paul Bunyan stories I've sometimes been stumped by some logger jargon or timber-camp slang. This book is a big help. It also illuminates the colorful working language of a group of iconic North American heros, and, by implication, their shared worldview. While this book is primarily focussed on Michigan lumberjack slang, it also covers the older slang of the Maine woodsmen. It omits the slang and jargon peculiar to the West Coast loggers.
A useful referrence. Any school that touches on American folklore should have a copy, and it wouldn't hurt for those schools looking at 19th-century industry to have one too. If you are interested in American slang, particularly the slang/jargon mix of working pople, it is a good resource.