Hey, I'm single...i thought you were talking about remembering folks like me.

seriously, though, I do remember when music was on BOTH sides of the
dics, and have seen 78's that had grooves on only one side. some of these were "cut" in a university recording studio/lab apparently, and
had multiple holes in the middle presumably to keep them centered while the process of cutting the grooves was going on.

too bad the record lady no longer has her web site
here is one: http://78rpmrecord.com/