The full-page ad below was run by the Communist Party USA in the New York Times on February 24, 1943. The featured author is CPUSA head Earl Browder (grandfather of ex-US citizen Bill Browder of Magnitsky Act fame). The purpose of the ad is to convince Americans that the Soviet Union is not subverting the US government or policy. At the time, it was not generally known that Browder was a paid Soviet agent and the CPUSA was a Soviet-sponsored front group.
So imagine the impact of a $100,000 worth of mostly post-election Facebook ads in 2016 vs. the impact of a full-page in in the paper of record before TV or the Internet.
Download/save the ad (which is broken into three separate images) and open the images in your browser so you can read it.