Further Roswell/alien slides information from Spanish UFO researcher, Jose Antonio Caravaca
" ... Maussan said that the Roswell slides [were taken at the White Sands airbase] ...She (Hilda Ray) was a good friend of Eisenhower's [wife. Mamie].... Through ... this friendship, Hilda could see the images....
In the minute 32:28 [of the video linked below] Maussan said that one of the humanoids was transferred to the base of White Sands for the General XXXXX (you understand the name).