Charles Turner above probably related to these special orders. (taken from a Microfiche system by a friend decades ago) (R-model batch order shown here). I sent them back then to Howard. At that time he had not seen them at least.
The later changes were issued more in a handwritten style as supplements.
http://www.ponysite.de/R-SHELBYorder_ponysitede.jpg
http://www.ponysite.de/handwritten_R-Shelby_ponysitede.jpg
The later changes were issued more in a handwritten style as supplements.
http://www.ponysite.de/R-SHELBYorder_ponysitede.jpg
http://www.ponysite.de/handwritten_R-Shelby_ponysitede.jpg