Alexander Johnston created this map showing distributions of religions around the world that was published by Willi Blackwood & Sons in May 1854. (Via Princeton University Library).
![Moral & statistical chart showing the geographical distribution of man according to religious belief : with the principal Protestant mission stations in the middle of the 19th century](https://brian.carnell.com/wp-content/uploads/2020/03/sj139385g-1024x856.png)
Just another nerd.
Alexander Johnston created this map showing distributions of religions around the world that was published by Willi Blackwood & Sons in May 1854. (Via Princeton University Library).