I grew up in New Hampshire in the 60's/70's, and in the summertime, my uncles would let me and my brother help them out sometimes as "lumpers". They were in the construction, painting, roofing trades. Lumpers was the term they used for fetching things, cleaning up debris, scraping paint etc. I clearly recall seeing TL-29's being used by them. They were cheap tools which they would use mercilessly to scrape putty, open paint cans, dig out some caulk, etc. These men were ex GI's and they picked up these knives at the army surplus store for cheap money.
My Grandfather from my mothers side of the family was a machinist who worked for the mill. I remember him as a retired man, tending his gardens, and in the summer being recruited to help with the splitting and stacking of fire wood. He carried a Barlow. In my minds eye, it seems it was just a cheap knife with well worn blades. Nobody in the family seems to recall what became of it, ( I was a knife knut even as a young kid) He taught me to sharpen things, first wedges, then axes, on an old white stone wheel, foot powered with a tin can with a nail hole in the bottom full of water which dripped onto the wheel...nobody in the family had a clue as to whatever happened to that wheel, I would give a kings ransom to have it today. Later on he taught me how to sharpen knives and chisels, on bench stones. He didn't have a lot of things, but the things he had were well cared for, and used to their potential.
On my fathers side, my Grandfather was a shop owner from when I was young, and I don't recall any pocketknife ever being associated with his memories. He was however, an avid wood carver, and had an extensive set of dedicated carving knives on his workbench.
My father was a machinist, tool & die maker, and he carried a Japanese swing guard knife, smallish, but well made for his daily carry, and his fishing and hunting knife was a homemade one off ground from a file, with aluminum handle slabs. It took a keen edge for sure!
When I reached about age twelve or thirteen, I was working a paper route, and saved my nickels and dimes till I had enough to buy my first "real" knife ( there were the shell handled "banana" knives with fish scaler and bottle opener that we kids had and abused/destroyed), but my first real quality knife was a Buck 112 Ranger, I remember how the ebony covers on it were almost completely black in color. That knife cleaned many fish and other game in those days, and was my every day companion. It followed me into the Coast Guard, and sadly, was dropped overboard while working on some netting on the flight deck of the cutter I was stationed on somewhere off the coast in the Gulf of Alaska.
I think folks bought and used whatever was locally available, and affordable, in whatever circumstance they were in. Interesting thread, and thought provoking to hear the different regional differences, and similarities.