Hey Florina, you can find TOS ENVEST program in 3 places.

(1) search for Edgelow in the "Archive org" website books. They have some books that contain the program.
(2) Springer 2013 Thoracic Outlet syndrome book. This has almost full program.
(3) Physical Therapy: Treatment of Common Orthopedic Conditions book, Jaypee Brothers editorial. It is the chapter 1. It has the updated porgram by Steve Talajkowski