Well, yes and no. There might not have been any 'spins' on AM radio but by then, it was all "happening" on FM anyway. I'll bet you that "Amelia" and "Coyote" were pressed as 45 singles although, here too, the action was in elsewhere: LP, cassette and 8 track.
Lama >>>>> In the This Month is History section of jmdl, it tells us that THOSL peaked at #4 on the U.S. charts, and HEJIRA peaked at #13. That's amazing, huh? With no hits on the radio? Wow.