I have a small stack of the Desert mags somewhere around here.
Yes, the Legend Detective team acquired the entire Desert Magazine archive and there are indeed, some great pieces about Pegleg, but if you really want to find out more about the original Pegleg, here are some great articles/books/documents:
1) "George C. Yount and his Chronicles of the West," by Charles Camp
2) "Fur Brigade to the Bonaventura: John Work's California Expedition of 1832 for the Hudson Bay Company."
3) "Ewing Young in the Fur Trade of the Far Southwest," Oregon Hist. Society.
4) "Pegleg, Man & Mine," Overland Monthly, Oct 1930
5) "The Two Smiths, The Pacific Historian
6) "Wakara, Hawk of the Mountains," by Paul Bailey
7) Phillip Bailey's notes at ASU
8) Bancroft, "History of California"
9) "On The Old West Trail," and "Reminiscents of a Ranger, by Horace Bell
10)"Gold Rush" by J. Goldborough Bruff
11) "Mountain Men and Fur Trappers of the Far West." This is a ten volume set but Pegleg appears in one Volume. e.
12) "The Old Santa Fe Trail" by Harry Inman
13) "King of the Tulares" by Anne Mitchell
14) The Jimeno document, Nov 10 1841
15) "Notes on the Cockrell Family and Peg leg Smith."
16) Letters to and from Pegleg Smith with Brigham Young, LDS Library
!7) Hutchings California Magazine, "Sketches from the Life of Pegleg," Oct, 1860 - March 1961
18) "History of San Bernardino" by Brown and Boyd
19) "Wild Life in the Far West: Personal Adventures of a Border Man, Capt James Hobbs
20)"Expeditions, Trading and Life of Thomas L. (Pegleg) Smith." Glen Humphreys, BYU
These 20 books, articles and documents will put you on a journey that will inform you about who the real Peg Leg Smith was. Some of these will require contact with libraries, historical societies, visits to special collections and so forth. A few are on-line. Many are hard to find but if you want to be a Pegleg expert, this is a great start. Then, if you want to take this further, subscribe to some of the newspaper archives on-line and print out every newspaper article you can find about Pegleg from 1840 to 1940. I warn you -- we are talking about 300 plus articles.