I found what I thought was a White 77 like the one mimack posted above, but it turned out to be a 75. I could not find any info about the 75 model but it looked to be a little older.
The poor guy who had it listed on CL offered it to me for free, but I don't have room for it and really just wanted the 77 because that was what I learned to sew on. If anyone is interested in the 75, I can send you the link to it. It was a nice machine, had lots of accessories and the manual, in a cabinet that was not original (located in south central Michigan)
So I am still on the hunt for my "sentimental" 75!