The Spartan was back in the 70's. There is an old book written and photographed by an old TWA FA named Chris Sorenson. Took great pictures and Grandpa knew him from work. Dickenson is in it, my grandpa in a couple places (one neat picture of the airplane in my avatar in a formation take-off with a Waco YOC). The book is called "Flying the Old Planes" or something.
That Spartan Executive was still at Santa Paula when I worked there, I don't think the Dickensons still owned it at that time. I just remember someone opened a hangar door and I was gobsmacked at what I saw. Just a beautiful airplane from any angle.
They are gorgeous machines. There was a group of 450 Pratt planes - the Spartan, the Waco SRE, the DGA-11, and the Stinson SR-9F, along with the Stag and there were all just insanely desireable. Like almost impossible to choose.