Mansion of Elizabeth F. Raymond (widow of Edward A. Raymond). Beacon St going west to the left, Summit Ave. runs along the right side of the photo.

From the 1887 photo series taken just before the widening of Beacon St., most likely by Augustine H. Folsom, a Boston photographer.
incl. Streets

[Courtesy of the Digital Commonwealth (CC BY-NC-ND). From the Brookline Photograph Collection published by the Public Library of Brookline]