The Washington Times-Reporter (Indiana) has an article about the Altorfer Bros. Company of East Peoria discussing their production of armor piercing tank ammunition during World War II.  Altorfer Bros. Co. (A.B.C.) was a manufacturer of washing machines prior to the war.  During the war they switched over to the production of war materials, including tank ammunition.  The article is written primarily based on the remembrances of 91 year old Hank Altorfer and his sons.  Much of the information is frankly either incorrect or exaggerated, but tank enthusiasts will still find the article of interest.  Unfortunately the article does not mention the type, or even the caliber of shell that A.B.C. manufactured.