May I invite you to visit my pinterest collection. I collect images of primary sources such as preserved originals and contemporary written and image sources. I tried to get as many informations as possible for each image.
You may also have a look at the album "PLEASE HELP" and I yould be very happy about any hints.
http://www.pinterest.com/bullenwaechter/
@ Marcus den Toom: Stangenbüchse