#2, 3, 4, 9 Summit Ave. On the far right is #26 Winchester St., the house of John S. Saunders, veterinary surgeon.

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]