The Histomap of #religion by John Sparks from 1952 is an outstanding piece of scholarship. Very interesting to read through the whole piece. You might want to go to the link to read in high-res. I'm impressed by such research. Source: https://t.co/sBYJnaqyoX pic.twitter.com/3l2g3ySdhU
— Simon Kuestenmacher (@simongerman600) December 19, 2018