Originally Posted by Autodidactic player
You got the Tretorn and the Fox ("ATP Mid-Fox") correct. There is no Sterling. The chrome racket is a "Cortland Steel;" the one with the air valve is the "Maynard AirPower;" and the one on top is the "Midland STR." The Seamless/Seamco looking racket is actually the predecessor called "Hart Pro Aluminum". Here's a better picture.
Aaahhhhh the Hart.....another Ski company trying to get into the tennis biz in the 70s.