Thanks, my google abilities had failed me. I was hoping it was a trapping related item but I guess it's just more of a back pack with the Trapper name thrown on it
Well, they kinda were trapper related. Lots of the old Alaskan sourdoughs and trappers carried them in the 30s and 40s era. Was probably the best thing available at the time.
The Alaskan Scouts during WWll used as part of their gear also. Jim Reardon wrote a book on the Alaskan Scouts and there is mention of the Trapper Nelson Packs in h his book.