All maps ©Sterling Memorial Library Map Collection. Cartography courtesy Stacey D. Maples/Yale Map Collection.

Equipped with an itinerary by the editors of the Yale Boswell Editions, Stacey Maples, GIS assistant in the Map Collection, created four maps charting Boswell’s travels through German and Swiss territories during 1764-65. For the map above (a detail of a work in progress), Maples blended five different layers of radar data to create the “Swiss shading” effect that shows the steep terrain.