Use 'Advanced Search' in the Library Catalog to find posters, photos and chiefly illustrated books.
For posters, postcards, etc.. limit your search to 'Material type' Posters, Photographs or Graphic Materials
For illustrated books combine your search term/s with 'Pictorial Works'
e.g. Beirut and Pictorial works
E.W. Blatchford Photograph Collection: 801 photographs of the late 19th century Middle East.
Moore Photograph Collection: 106 black and white photos of AUB campus,
Travelers in the Middle East Archive: Photos on
" Materials range from the 15th century to the present and include books, photographs, manuscripts, archives, and works on paper."
"Digital Library of Free Books, Movies, Music & Wayback Machine"
Over 1.2 million images, although some only in thumbnail. Historic photos, architectural drawings, posters, prints, drawings, cartoons, and more.