This val returns a random Georeference Annotation from the David Rumsey Map Collection.

More information about the source data can be found here.

You can use this val by copying its HTTP endpoint and opening it in Allmaps Viewer:

https://viewer.allmaps.org/?url=https://sammeltassen-rumsey_roulette.web.val.run

Each time you refresh the page, the viewer will load a random map from the Rumsey collection!

In total 56626 maps have been georeferenced.