How To Make Friends By Telephone

When I got my first office job back in [CENSORED], proper telephone etiquette was still a topic of employee orientation.  This booklet, How To Make Friends By Telephone, posted on Retronaut, contains many of the same recommendations, even though it was published many decades before my experience as a young lad.  Although the title suggests the purpose of the book was to advise telephone users about social calls, the contents indicate the intended audience was business users.