I really don't know anything about these notes with the exception of who may have collected them. They belonged to my wife's nephew and we believe they originally came from my wife's aunt, who was a nurse with the Army and traveled all over the world during the 1910's and 1920's and may have given them to my wife's nephew when he was a boy. We've got pictures of the aunt in Poland, France, Czechoslovakia and Austria in 1919 and in Egypt and Turkey a little later Most of these date from that time period although there are a couple shown below that are from the 1930's and 1940. I thought it interesting that some of them look like they were cut out with a pair of scissors instead of having the straight square cuts that most notes have.