Question: Lincoln the Unknown is a biography of Abraham Lincoln, written in what year, by Dale Harbison Carnegie, was an American writer and lecturer and the developer of famous courses in self-improvement, salesmanship, corporate training, public speaking, and interpersonal skills?
Sentence (from "Dale Carnegie"): Born into poverty on a farm in Missouri, he was the author of "How to Win Friends and Influence People" (1936), a bestseller that remains popular today.
Relevant evidence: No