Many historians love maps. They are among our primary sources. They assist with interpretation. And, they are often really pretty. Here is an introduction to a few databases that provide historical maps.
The databases listed here are just the beginning of our statistical and spatial data collections. See the Data/Statistics/GIS Portal for a more complete list.
For additional recommendations, contact your subject liaison (Dr. Bee Lehman) at brittany.lehman@bc.edu or schedule an appointment with them.