Ask even a big fan to name a HC pre-WWII, and they'll say Heisman, Rockne.....maybe Stagg. That's probably it. Neyland if they're an SECer. But there's Pop Warner, Leahy, Camp, Yost, THOMAS, Crisler, Wade,etc.....
If you told someone Vanderbilt had a HC that won about 200 out of 250 games, they wouldn't buy it. But it happened, just way the hell back in the day.