I'm pretty new to heritage fruit and vegetables, so I thought it would be handy to start off a thread where everyone can add useful websites/blogs, books, suppliers, seed swaps etc. to help others starting off like I am.
I see lots of people have already mentioned the Heritage Seed Library (HSL), so here's their website:
I've got some more to add, but they're not to hand at the moment, so I'll add them later unless you do!
What have you found particularly useful?