An interesting, eclectic group of posters (just 34 in all) that are on display at MOMA, including several noir titles from the US and the UK, including foreign posters for a number of those titles.
Well, maybe they are on display...
When you use this link, it takes you to a version of this exhibition that was displayed at MOMA in 2015. There are 18 images shown as part of the web page for this event, with multiple posters shown in each image, so there could be a total of 30+ poster images collected in the photos.
Some marvelous posters, including some rare and wondrous larger sizes. (Dig that CAT PEOPLE 3-sheet...)
Brian Camp's 2015 blog entry provides additonal info and images:
My presumption is that Marty's collection is a good bit more sizable than this.