Missouri
Click on the name of a city to be taken a panoramic map of a baseball field in that city. Each map is accompanied by short bibliographic information, and clicking the name of the author gives you a list of all the maps from that author on the LC American Memory site.
St. Louis - 1876 St. Louis - 1876: O'Fallon Park St. Louis - 1876: Red Stocking Ball Park St. Louis - 1876: St. Louis Baseball Park