On the north side of Beacon, the Coolidge & Brother store is barely visible in the center, behind trees.
Next is the James Whitney house on the corner of Pleasant Street, then the John G. Stearns house at 24 Pleasant Street, and finally the complex of the James Stearns house at 31 Pleasant Street, seen from the rear with conservatory and carriage house (left to right, respectively).
Left, on the south side of Beacon Street, you may see a horse & carriage approaching the C. H. Stearns house.

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]