The gentleman in the center of the photo is Mike Vurhulst. Mike was the design engineer for the A4T 1600 (2655 Oliver) tractors. He did a lot of work on the Corporate tractors that you aked about.
I happed to be in Charles City when they unloaded the remaining components that were found. I have photos that I will post later, however I have a painting project to do tonight so don't know how late it will be.