Guitar Pedal X - GPX Blog - Marshall creates quite a stir with its exact 1988/1992 Classic Pedal Replica Reissues - Guv'nor, BluesBreaker, DriveMaster and ShredMaster
Marshall's Greatest Pedals — The JHS Show
Discontinued Greats: The Marshall Shredmaster | guitar TONE OVERLOAD
Marshall's Greatest Pedals — The JHS Show
History of Pedals - Part 2 - marshall.com
Guitar Pedal X - GPX Blog - 9 cool pairs of Vox-in-a-Box and Marshall Plexi style Pedals which have, or are about to fill slots #17 and #18