Hello,
Currently on ebay are a small number of stereo images of WW1 French aircraft which may be of interest .Representative is this Caproni CEP.1 B2
https://www.ebay.fr/itm/355842692539...8AAOSwsalmhu9i
The other images can be found here
https://www.ebay.fr/sch/i.html?_dkr=...+avion&_sop=10
Regards,
Clint