These are bookmarks to use in a school library. They are black and white to make for easy copying. They can be copied and just handed out as regular bookmarks that offer some assistance to patrons or they could also be used in scavenger hunts practicing looking for different areas of the library.
The call numbers (in every case but two) match my Dewey Shelf Labels.
If you have a request for something to be added just ask here or on my blog. If I already have an image to go along I will add it and update the file as I can. If I don't already have a matching image we can discuss where to go from there.