Most of the postcards in the Museum's collection are unmarked, either by year or by the photographer. When there is no postmark, establishing an approximate date has to be based on what we see in the picture or know to be historically true. For example, the original design for the Memorial Arch did not have an eagle on top. Jennie Dean donated the eagle a year after the arch was completed.
In the mini series postcard of the arch above, we see the eagle, so we know it must be dated after 1906.Some of the postcards have sweet or practical messages written on the back. One postcard message asks for a job, another one, is from someone named Fred...