Interesting that Sanger's, Shillito's, Rike's, Lazarus, Burdine's, Boston Store, Rich's and Abraham and Straus, Bullock's and Foley's were all Federated Stores. Of course, at that time (mid 50's) perhaps not all were Federated, but most were and in fact Lazarus, Shillito's and Abraham & Straus were three of the founding stores of Federated (I believe Filene's in Boston was another, but was not mentioned in this ad),
The other thing I thought interesting was that some of the Associated Dry Goods Stores (Joseph Horne and Stix, Baer and Fuller) were listed. Since Associated was really the "white glove" group of retailing, I am surprised they carried appliances since they generally didn't carry things like housewares, kitchen, etc... (at least in the 80') . Other Associated stores like Lord & Taylor, JW Robinson, Goldwater's, Powers Dry Goods, Hahne's, The Denver Dry Goods Company, H&S Pogue, L.S. Ayres, Stewart Dry Goods, Sibley, Lindsay and Curr were always the fashion leaders in their respective geographic markets - sadly all gone now, victims of corporate acquisition, homogenization and consolidation. Read that as "Macy's".
I recall that as a child it was the "A&S annex" sold major appliances. It wasn't part of the main store, but was across the side street. It was always a treat to go over there - for me, better than the 8th floor toy department!!!!