Here’s a list of ephemera from Andy Weimann, from the Plymouth Owners Club. Contact information is at the top of the image.
This is perfect! I have 2/3rds of the 59 Master Tech booklets so hopefully this will help complete my collection! And for the prices cant beat that! 
I sent Andrew an email, hopefully he still has a few of the Master Tech issues I am missing from my collection it would be nice to complete the set. Thanks for posting this Dan 