Ed Muderlak's published Parker related books were:
Parker Guns "The Old Reliable"
Parker Guns: Shooting Flying & the American Experience
Parker Brothers: Knight of the Trigger


as well as Parker related articles in Double Gun Journal including an article in Winter 1999 regarding S.A. "Tuck" Tucker's AAH Pigeon Gun

His Parker Pages contributions are here
https://parkerguns.org/pages/Parker%20Pages%20Library/index.html