Emerson Hospital, a 42-bed institution, once stood at 118 Forest Hills St.  The hospital was founded and operated by noted Homeopathic physician Nathaniel W. Emerson. The hospital was established before 1907 and appears on maps as late as 1924. A higher resolution copy of this image can be downloaded here.  Thanks to the Boston Public Library and Mark Bulger for the 1924 Bromley map.