I know there's at least one person on here (ChesterMikeUK I believe) who has the early Parnall tumbledryer with the solid door.
Well the Ebay listing below (not mine) has a 10 page manual for what appears to be that model of dryer, and it looks to be in excellent condition!
I would give my right arm for a manual like that for my own Parnall, especially in that kind of condition!