Hello,
Currently on ebay are some photos of aircraft from the Mexican Revolution of 1913. Among the more interesting are the following two
https://www.ebay.com/itm/22604654991...4AAOSwEWxl87JY
https://www.ebay.com/itm/22604653865...UAAOSwykNl87AI
The complete collection from this seller which includes some non-aviation related phtos can be found here
https://www.ebay.com/sch/i.html?item...bcolangelo2012
Regards,
Clint