Read the full story: Christianity Today
Billy Graham was a born salesman, and he knew it. In the summer of 1936, after graduating from high school, he crisscrossed South Carolina selling Fuller brushes door to door. By the end, he had posted the best record in the state. The experience taught him a lesson he never forgot: If you have the best product in the world, then herald it with fervent conviction and the best marketing tools at hand.