I wasn't sure exactly when Libby and Pop (my step-grandfather, Edgar Rust) moved from their house in Chestnut Hill to Boston, so I explored the City Directories at Ancestry.com. The 1954 and 1955 Boston City Directories don't have alphabetical listings that get to Rust (their images may be of volume 1 and not volume 2), but they do have the street listing that includes Beacon Street, which is more fun because in one place, a researcher can see who else is living in the same building.
The 1954 Directory shows that the apartment at the 8th floor was not occupied:
|1954 Boston City Directory|
p. 1506: 172 Beacon Street
In 1955, Edgar Rust is now residing in the apartment on the 8th floor:
|1955 Boston City Directory|
p. 1406: 172 Beacon Street
|172 Beacon (2013),|
courtesy of Backbayhouses.org
Libby lived on the 8th floor of 172 Beacon Street (the floor with the railings outside some of the windows) and we visited her apartment a few times a year, usually at Thanksgiving, Easter, and one day during our December school vacation. (She came to our house in Dedham on Christmas Day.)
Just looking at this picture of the front of 172 Beacon Street reminds me of going to visit Libby and going up the old fashioned elevator (with a doorman to work the sliding metal cage-style door) which opened directly into her front hall.
According to Back Bay Houses, the building was converted into condominiums in 1977, so she went from renting the 8th floor to owning it.