The paternal grandfather and his family owned a factory outside of Paris and he and his siblings traveled the world selling their products — glue. I have access to a series of their travel photos taken around France in 1911-1917. Most of the locations have been labeled with a fountain pen. The one under the latticework of iron might well be the Eiffel Tower.
The final photo with “Paulin” (my paternal great uncle) on the left and his mother “la Patronne” (my paternal great-grandmother) in the foreground.