Host Elyse Luray investigates a piece of fabric that could be the last remaining artifact of Cromwell Dixon's brief aviation career. Reporters called Dixon the "Boy Genius" pilot. At 19 years old, Dixon was the first man to fly across the Continental Divide. A collector of early Southwest American images believes he owns a sketchbook related to the first US-Mexican border survey. Eduardo Pagan investiages the fiercely disputed borderlands of the Southwest. Tukufu Zuberi sets out to find the real story behind metal sheets that look like printing plates for "Take the A Train," written by Billy Strayhorn and performed by jazz great, Duke Ellington.