This postcard shows The Oil Blending Plant in South St. Paul, Minnesota.  It is from the Linen Era (1930-1945).  It is in excellent condition (crisp) and is unposted.  FREE SHIPPING-DOMESTIC ONLY    Please check out my other sales and my store.  XXXXXXXX   I OFFER EXCELLENT CUSTOMER SERVICE.   PLEASE CONTACT ME IF YOU HAVE A PROBLEM!!!   XXXXXXXX