http://www.palestineposterproject.org/
The Palestine Poster Project Archives (PPPA) was founded as a means of collecting and digitally displaying a wide variety of works in the Palestine poster genre. The Palestine poster genre is more than a century old and growing. The Palestine Poster Project Archives continues to expand as the largest online collection of such posters.
A majority of the works included in this archives are created by Palestinian artists, although the collection also features many works created by international, Zionist, and Israeli artists. More than 8,600 posters created by at least 1,750 artists are currently available on the Palestine Poster Project Archives’ website for public viewing.
Source: Wikipedia