Amp books, prices based on being cheaper than a quick online search.
UK only, some of these are heavy so I'm assuming £5 postage for which I'll try and buy the best postage deal. Will combine if needed obviously.
Groove Tubes book. Good for info, taken with a pinch of salt, many tech articles and schematics. £25 plus postage.
Gerald Weber ' a desktop reference of hip vintage guitar amps'. I'd review it similarly to the above. £20 + postage
Teagle and Sprung Fender amps, £10 + postage couldn't add pic, will try again later.
Many thanks for viewing, Martin