Some books.
This one is the 2012 University of Alberta reprint of the Frontiersman's Pocket-Book. A very good book actually, packed with bushcraft and frontier lore. I'll find an original one day, but in the meantime, I am very pleased with this leatherbound modern reprint.
Geoffrey Pocock's One Hundred Years of the Legion of Frontiersmen. Another excellent book.
Roger Pocock's 1931 book "Chorus to Adventurers" details the founding of the Legion of Frontiersmen from the founder's own perspective.
Not about the LoF, but by a Frontiersman who was quite famous in his day, Australian Walter Kilroy Harris' "Outback in Australia".
Back in 2017, Canadian Frontiersman Historian Barry W Shandro released a wonderfully concise document about the history of the Legion of Frontiersmen. You can read it here - www.frontiersmenhistorian.info/notebook.pdf