Delta Air Lines formed a historic partnership with the City of Atlanta and Hartsfield-Jackson Atlanta International Airport. On March 1, 1941, Delta officially moved its corporate headquarters to Atlanta on leased airport property and constructed offices and Hangar 1, the largest aircraft hangar in the Southeast. In 1947, the complex doubled in size with Hangar 2 and an executive building housing the office of Delta founder C.E. Woolman. Today, the original 1940s buildings of Delta's headquarters are the oldest existing facilities on Atlanta airport property.