Ca. 1915. The dirigibles are likely German due to the long thin shape, photographed hovering over an unidentified European city, which is possibly Paris, one image taken from a tall building's rooftop with the sign, "Sendic" (visible in the foreground, in verso) and the second with a Hotel Louis [...] sign visible at the lower right. The city seems extensive and relatively flat.
During WWI Germany conducted a strategic bombing campaign, the best known of which was the one against England, called "Zeppelin raids". The zeppelins were known as "baby-killers" due to the civilian casualties which resulted.
Postally unused. Vernacular shots, with the developer's thumb print visible. 5 1/4 x 3 1/2" Very good condition. Item #24947