I got an email today from Jack's wife saying that he passed from cancer this morning. Jack was a big Sinclair collector, one of the original 6 that met up that led to the Iowa Gas show. Jack got a lot of my money over the years when I was building up my collection. He always treated me fair on prices and his wife almost always had a cold Pepsi and a home made cake for us when we stopped by. The majority of the items in the Sinclair collectables book (by Benjamin and Henderson) were from his collection. He was a good guy in the hobby, the Original Mr Sinclair.