Assembling phones at Northern Electric, 1948

Canada Today.  Bank of Montreal, 1948, Revised 1949.

I have one of these sets on my desk, which I use regularly. Lovely sound quality.

Below, the same phone in an illustration in a 1961 school reader:

William D. Sheldon, Queenie B. Mills & Maragaret K. Moore.  Our School.  Allyn & Bacon, Inc., 1961.  Illustrated by Ruth Potter.