Back on 27 May 2009 I first posted my Sterling Plastic Presidential Educator pencil cases. I only had three at the time. Now I find number four. The two on the left are Sterling Plastic Model 558 and the two on the right which includes the new one are model #562. I know have cases ending in President Kennedy, Johnson, Nixon and my new one Carter. The real question is where is Ford? Was one made? These cases were made from 1963 to 1977. These are all US made in Mountainside New Jersey. All sterling plastic office and school supplies are very collectible so add them all to your collection.