I was a regular customer at BOTH shops in the 70’s. Same building, single corner entrance, set at an angle. Sign above one door said Warshawsky, other door said J.C.Whitney. They both published a catalog, nearly identical, except for part number & prices. Some items were cheaper in one catalog, others cheaper in the other. I would spend several hours comparing prices & making a list with Catalog#, Part#, Item Name, & Cost. Then make my 70 mile drive into Chitown to make my buy… Loved It!