Hi Olaf, That looks like a nice collection of maps! I added a couple to the Wikimaps Warper. See for example https://warper.wmflabs.org/maps/221#Preview_tab . For people who want to play around with the Warper too: * Go to https://warper.wmflabs.org and login. Select Oauth Wikimedia Commons * Go to https://commons.wikimedia.org/wiki/Category:Media_contributed_by_Tweede_Kam… and pick a map * Edit the source, change "| warped = " to "| warped = 1" and save it * You'll now have a link "View the georeferenced map in the Wikimaps Warper", click it * Go to the "Rectify" tab * You'll get two maps. On the left the old map, on the right the current OpenStreetMap (https://warper.wmflabs.org/maps/221#Rectify_tab) * Put a point on the same location on both maps (for example a city) and click "Add Control Point" * Do this for at least three points, but more is better. Try to spread them around the map * Click "Warp image" and wait * Go to the "Preview" tab to see your work ( https://warper.wmflabs.org/maps/221#Preview_tab) Maarten Op 20-11-2015 om 15:42 schreef Olaf Janssen: Hi, This might be interesting for those interested in Dutch (colonial) history: last week I did an donation of 512 maps and images from the proceedings of the Dutch Parliament (the so-called States General <https://en.wikipedia.org/wiki/en:States_General_of_the_Netherlands>. They are from the period 1885-1995. The images are in Category:Media contributed by Tweede Kamer <https://commons.wikimedia.org/wiki/Category:Media_contributed_by_Tweede_Kamer>. Every image has geo coordinates for the map centre. The set has some unique content, not only about the Netherlands, but also about its former colonies Dutch East-Indies (now Indonesia) and Suriname. Themes include the Delta Works, polders, land reclamation and the construction of roads, railways, and ports. To foster reuse, I started assigning thematic categories to some images, for example Eastern Scheldt <https://commons.wikimedia.org/wiki/Category:Eastern_Scheldt>, Delta Works <https://commons.wikimedia.org/wiki/Category:Delta_Works>, Canals in Friesland <https://commons.wikimedia.org/wiki/Category:Canals_in_Friesland>, IJsselmeer <https://commons.wikimedia.org/wiki/Category:IJsselmeer> and Railway lines in the Netherlands <https://commons.wikimedia.org/wiki/Category:Railway_lines_in_the_Netherlands> Met vriendelijke groet / With kind regards Olaf Janssen Wikipedia & open data coordinator Koninklijke Bibliotheek - National Library of the Netherlands olaf.janssen(a)kb.nl +31 (0)70 3140 388 @ookgezellig <http://www.slideshare.net/OlafJanssenNL>www.slideshare.net/OlafJanssenNL [image: Koninklijke Bibliotheek, National Library of the Netherlands] Prins Willem-Alexanderhof 5 | 2595 BE Den Haag Postbus 90407 | 2509 LK Den Haag | (070) 314 09 11 | www.kb.nl English version <http://www.kb.nl/en/email> | Disclaimer <http://www.kb.nl/disclaimer> _______________________________________________ GLAM mailing listGLAM@lists.wikimedia.orghttps://lists.wikimedia.org/mailman/listinfo/glam _______________________________________________ GLAM mailing list GLAM(a)lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/glam