I could swear back in the day there were tires that were 78's, that was the 1960's and 1970's. Damn...showing my age.
Going back into the '50s and you'll find tires like 7.10-14, 7.60-14, 8.10-15, 9.10-15 ... then in the early '60s they changed to a very slightly lower profile, about 83% aspect ratio I think, and sizes like 7.25-14, 7.75-14, 8.25-14, 8.55-14, and etc which replaced the older ones in the books. Later '60s saw the 78, 70, and later 60 series with letter designators, A78-13, C78-14, D78-14, D70-14, E70-14, F70-14, F60-14, G60-14, G60-15, L60-15, etc.
Daddy went in with a bunch of others at his job and they ordered a whole truck load of the first radials we saw, he got 215-14 Michelin X Radials to replace the 8.25-14 tires on our 'new '65 Plymouth Belvedeer Wagon. Right much taller than a current 215/60-14 tire, it was 80+ aspect ratio. People were always riding by pointing at the tires trying to tell us they were low.