The 1949 Lockheed Constellation Airplane Operating Manual 649-749 is an original operating instruction Guide for a United States military aircraft. This collectible item provides detailed instructions and guidance on operating the Lockheed Constellation airplane, offering valuable insights into the procedures and protocols used during that time period. With its historical significance and unique content, this manual is a coveted item for aviation enthusiasts and collectors interested in military aircraft from the 1940s.