This auction is for a Vintage Wacker Drive Looking South Chicago Illinois Postcard. Shows Morton Salt, Kemper and Herald-American Buildings. The back says Aero Distributing Co. The back says Curteichcolor 3-D Natural Color Reproduction. It is in good condition. It has wear around the edges. It has been circulated. The postmark date says Jun 11, 1960. It has a 3 cent stamp. It is written on. I hav ...