The links on this page are all interesting, but are here because you may have to wade through rather more art nouveau or large pieces of train to find the gems.
Dealers
UK
Original Ski Posters
Fears & Kahn
Europe
Gallery 29
Stefan Heezen Origional Swiss Vintage Posters
Poster Team
USA
Chisholm Gallery
Chisholm Larsson
David Pollack
International Poster Gallery
Mark J Weinbaum
Nancy Steinbock
Paris Posters
Rare Posters
Railwayana
Sites
Southern Railway Publicity
ProRail – Railwayana Auction Guide
Auctions
Great Central Railwayana
G W Railwayana Auctions
Sheffield Railwayana Auctions
Solent Railwayana Auctions
Stafford Railwayana Auctions
Talisman Railwayana Auctions
Blogs
Other people who like the same sort of thing, and more.
Ace Jet 170
All Things Considered
Aqua-Velvet
delicious industries
ephemera assemblyman
Grain Edit
Graphic Journey
Martin Klasch
Persephone Post
Serge and Tweed
20th Century Rural Culture
Vintage Poster (French)
I am sure you know the Spitalfields Life blog – if not, see the Barnett Freedman piece ~June 2nd.
I do, but hadn’t seen that yet – thank you!