Breckenridge was a sleepy ranching and farming community in the rolling prairie of north central Texas when an oil boom hit. During 1920, it grew from around 1,500 to 30,000 people. By some accounts, its population got as high as 50,000 in the mid-1920s, which would have made it the sixth-largest city in Texas. Pieces of the past remain in its 10-story "skyscraper," the YMCA, and other edifices constructed in the Roaring Twenties, many of which are...