These are picture postcards found with my grandfather’s World War I journal. The other side is blank except for the pre-printed Carte Postale (French for post card) . They were not mailed home. They show some of the lumber and milling activities of the 20th Engineers stationed in France in 1917-19.
Here is a map showing the locations of the various camps referred to in the post cards
The pictures below were also found Poppa’s journal but have no labels indicating where they were taken.
Update 4/2/2018: Thanks to Michel Boquet the locations of these pictures have now been identified.