Edgar Rice Burroughs failed at a number of business ventures before he wrote his first short story, "Under the Moons of Mars" (1911), published in All-Story magazine. It was so successful that Burroughs turned to writing full time. All-Story had just raised its price to fifteen cents and needed a novel strong enough to hold its readers despite the price increase. The editor suggested that Burroughs submit a sequel to "Under the Moons of Mars." Instead, Burroughs submitted Tarzan. The delighted editor decided to run Tarzan complete in one issue. Six years later, in 1917, the Chicago...