Nana's Buttercream Frosting
Going through my Nana's vintage cake decorating books
"Magic for your table Cake table
Food Decorating by Wilton"
I found this Recipe stapled to the inside cover page. She used to make it with mostly with Crisco to that it would hold its shape better.
1 lb or Powder Sugar
1/4 lb White Margarine*
1/4 cup Crisco
1/4 cup milk
1 tsp vanilla - Flavoring
Beat 8 to 10 min
*If you don't have white margarine or you live in a hotter climate you can just skip it and just double the Crisco to 1/2