|Digital image courtesy of the Getty's Open Content Program|
Recently, I had the chance to go to the new impressive Getty Center in L.A. With help from their research librarian, I was able to navigate a maze of links to access the online photos of Le Plongeon Expedition (1883-1875) of the Yucatan. The online photos are quite good resolution. There is lots of archaeological and art historical data to be mined since most photos are still unpublished.
Here is the link to the Getty Research Archives:
Use the files on the left of the page to access the photos. Click on the term "Recto" under each photo to enlarge each print.