File:Bell System-ScientAm-1915-02-20p187--The Telephone Unites the Nation 3kx5k.png

Summary
Bell System advertisement in Scientific American published on 1915-02-20. It depicts AT&T's marketing slogan and company strategy One Policy, One System, Universal Service.


 * Title: The Telephone Unites The Nation
 * Date: 1915-02-20
 * Author: AT&T
 * Publisher: Scientific American

The image is in the public domain due to age.