Hints and tips:
...It is for completing the “Dale Carnegie Course in Effective Speaking, Leadership Training, and the Art of Winning Friends and Influencing people”, dated January 23 1952....
...The first was held by men such as Benjamin Franklin and later incarnations such as investor Warren Buffett and Sam Walton, founder of Walmart, and codified in the 20th century by writers such as Dale Carnegie...
...But the old Dale Carnegie salesman basics of treating others respectfully, being presentable and likeable yourself, and simply being a good person to be around still matter....
International Edition