1909 Map of Mount Airy

About this map

The Baltimore and Ohio Railroad carves through the Maryland countryside on this early 20th-century survey, serving as a vital artery for transit between the rolling hills of Carroll and Howard counties. The settlement of Mount Airy serves as a central hub, while the landscape is defined by its water-powered industry, evidenced by numerous mills like Roxbury Mills, Hoods Mills, and Carrs Mill. These sites reflect a local economy still deeply tied to the drainage basins of the South Branch Patapsco River and the Patuxent River.