If you went to K Mart in the 1960's, this bowie was in the Western Knife display
and in the Case Display. a Case 1836 Bowie.
There was no such thing as the internet. Information on vintage knives came from articles in periodicals and a few books. The books were very general, lots of pictures of a lot of things. Few pictures on any one thing. So, this is what I thought a "Bowie knife" ought to look like.
Only after 2000 did I buy Norm Flayderman's book
The Bowie Knife: Unsheathing an American Legend. There were a lot of Bowie knife patterns, so much so, any big knife could be called a "Bowie"
Randall made the M12 and the Smithsonian Bowie, which were similar to the Western and Case above. All big, with heavy brass guards.
Neither the Randall No1 and No 14 were called Bowies, though they are big knives.
this is a big knife from the 1960's
but it was not called a Bowie
The WW2 generation humped 100 pounds of gear during the war, found most people were killed by artillery, followed by machine guns, small arms, mines, the occasional airplane attack or bomb, and post war many had definite low opinions about lugging some huge heavy knife on their belt. The ones that fought the Japanese had killed lots of Samurai sword carrying officers and bayonet charging infantry. Americans and Japanese found out, firepower obliterated edged weapon warriors.
In fact, read the book
Hardtack and Coffee, written by a Civil War Veteran. In it is a section about the fate of Bowie knifes given to, and carried by Civil War Soldier's. Most of them were tossed on the ground after the first 20 mile march!
In my opinion, a couple of reasons there is a current fascination with big heavy knives, is due to the fact people today do not walk far, and do not carry their gear. You can toss a ton of equipment on an ATV and not have the back straps of your pack hurt your shoulders.