1976 Bell System - Telephone 100th Anniversary - 2-Page Magazine Ad

This original 2-page magazine ad when carefully aligned and fully open measures @ 11 x 17" and features some of the highlights from the first 100 years since the telephone was introduced to the world.  It also announces the Bell telephone "Jubilee" hosted by Bing Crosby and Liza Minnelli for March 26, 2976