'Filming of Gone With the Wind'

This is George P. Oslin's life work. Among hundreds who told him their experiences were Thomas A. Edison, William Henry Jackson (Civil War soldier, pioneer photographer, and covered wagon bullwhacker), and William Campbell (last surviving Pony Express rider). Facts from company documents, thousands of newspapers, magazines, and books, and more than 100,000 letters and diaries of the pioneers were pieced together and condensed into the real story of their struggles, strategy, and success.