Most of the pictures in the collection were scanned from old works. Note, however, that I make no guarantee that these pictures are in the public domain; I advise you to check the copyright status of a picture before using it. Use them at your own risk. Some of the pictures have been determined to be copyrighted; you will have to settle the details with the copyright owner before using such a picture. These pictures are noted as being copyrighted in the documentation of the archive.
If you publish a picture (in print, a computer application or any other media), state the source, and send a copy of the publication to me. If you publish the picture on a webpage, you should put a link to the DAHAP page (http://www.kunskapsbolaget.com/DAHAP/) by the picture.
Whatever use you put the archive to, I would like to hear from you!
The level of documentation is varying. The minimum of information provided is the source of the picture, and a short note identifying the content of the picture. Sometimes more information might be supplied.
The pictures are provided in two formats. Grayscale pictures are saved in jpg-format, whereas drawings and engravings are saved in gif- format, as it seems that jpg-files must be in 256 colours. Saving the linedrawings as gifs allows them to be saved in 2 or 16 colours. This mix of two formats is somewhat annoying, but it reduces space in the archive.