I have been meaning to put up a post about this great shop we all stumbled on in New York last year called Chisholm Larsson Vintage Posters , great shop run by incredibly knowledgeable staff and with a website that is vast. So much inspiration here its hard to get your head around, so its best to go in there with a bit of a mission, theme, era, etc or you can get hopelessly lost.
"For more than 30 years in New York City, Chisholm Larsson Gallery has
offered the best and widest selection of original vintage posters. By searching our online catalogue
of original posters you can view more than 45,000 classic advertising
posters from the 1890s up to today, including over 15,000 original
movie posters. Our award winning collection includes Art Nouveau and
Art Deco product and liquor posters, travel, airline, Cappiello,
Cassandre, ocean liner, trains, Swiss, fashion, black interest,
political ( Spanish Civil War, WW1, WW2, Propaganda and Civil Rights ),
theatrical and film. Some of our specialties include classic European
and American movie posters by artists such as Lenica, Ballester,
Martinati and Bass. We feature one of the largest collections of
Italian, French, Swedish and Polish film posters in the world.
The searchable catalogue
of original posters and movie posters allows you to search by title,
poster nationality, actor, director, artist, film nationality, size or
decade"
here's a random selection from their archive