From what we understand of 1940s logic, if you are going to have a phone, you might as well start calling random people and make “friends.” Well, apparently that isn’t true and spreading a wee bit of phone etiquette might have been necessary as the phones were gaining ground. We’ll say the world needs another round of such information on phone etiquette.
How to Make Friends By Telephone: A Guide From the 1940s

I find it ironic that right below this, I see a note about “This site uses Akismet to reduce spam.” Then when I click on the “Via Retronaut” link above, it takes me to a fake site.
Thank you for the comment. This post is from 2013 and looks like the linked site has since been changed (to say the least).