I've just been copying the first few of a fairly large batch which have been stored in a damp workshop for at least 10 years. The main problem is small spots of mould all over the LP.

Unless you're after commercial issue quality, or copying exceptionally valuable LPs, I'd agree with Jack. I've washed them under a slow-running tap using a liquid soap and my fingers. I've then dried them using a worn cotton T-shirt, but only wrapping and patting them dry. The remaining moisture air-dries in about 5 minutes.

All the muck has been removed, and as far as I can tell I haven't inroduced any scratches or marks that weren't there before. I'm just about to start the next batch of 10 - it's a slow process.

Phil