It's a Snyder built bike. They manufactured bikes for the Hawthorne and Rollfast brands. The different brands used different styles of chain ring, but I can't remember which design went with which brand. Somebody probably knows.
There was a Hawthorne branded one at a local swap meet for $40 a week ago. Edit: one at the swapmeet was also blue. Sometimes you can strip off paint with brake parts cleaner without removing the original baked on finish.