There were many receivers who had numbers 1-49, mostly out of necessity due to the way the positions evolved.JohnTurney wrote:1973
1-19—kickers and QBs
20-49—RBs and DBs
50-59—C and LB
60-79—OL and DL
80-89—WR and TE
1979
90-99—DL
then the 80s got relaxed
for LBers
Players who had numbers outside new rules were grandfathered in
like John Hadl, Harold Carmichael, etc
I suppose some of the might have been considered "flankers" or former halfbacks from the true T formation, and I suppose in the early 1960s some of them had indeed been that. But by 1967 or so, an active roster might look something like this:
5 players 0-19 (3 QB, 2 specialists) 25% taken
11 players 20-49 (5 RB and 6 DB) 28% taken
6 players 50-59 (2 C and 4 LB) 60% taken
3 players 60-69 (3 OG) 30% taken
6 players 70-79 (3 OT and 3 DT) 60% taken
9 players 80-89 (4 WR, 2 TE, 3 DE) 90% taken
0 players 90-99 - 0% taken
With preseason rosters, the 80s were a nightmare, requiring players to switch numbers every year after the final trades or cuts. Easy to let receivers have a number or two in the 0-49 range, plenty available there.