We went to #Leiden last week and went to the #RijksmuseumBoerhaave
I love that museum.
Again I was struck by the mapping of #cholera epidemics. (I live near the #Dunea Water tower in The Hague so I'm mindful of water treatment and cholera.)
I tried to take a photo of my favourite map, it hasn't come out well, but #MartijnStorms made a good write up with a decent image online in this:
https://www.leidenspecialcollectionsblog.nl/articles/mapping-epidemics-nineteenth-century-cholera-maps-of-leiden
(I like the 1867 map best.) #datavis #Mapping #epidemiology