John Fraser Hart, cartographer.JFH.; Pen and ink.; Includes an age-sex pyramid for each of Indiana's 92 counties. Scale not given.JPEGed6576a8-778d-4fc9-a101-bff8d7c7ae8aengPublicIndiana, 1950: age-sex pyramids for counties excluding places over 10,000 in 1940.MapsIndiana1940Indiana University