Depends on just what you are looking for. The original oiled fabric oilcloth hasn't been made since the late 19th century when better alternatives (e.g. waxed cotton) became available, and in the U.S. "oilcloth" became vinyl coated fabric sometime after WW2.
I think most suppliers of "real" oilcloth are selling PVC coated cotton fabrics, not gelatinized and linseed oil treated linen.