File Overland route from United States to Panama, 1942 Box 2 In: John G. Claybourn Papers, 1908-1966 » Topical File
File Alert organization, 1940-1942 Box 2 In: John G. Claybourn Papers, 1908-1966 » Topical File » Panama Canal
File Claybourn articles and speeches In: John G. Claybourn Papers, 1908-1966 » Topical File » Panama Canal
File Dredging on the Panama Canal, 1931 Box 2 In: John G. Claybourn Papers, 1908-1966 » Topical File » Panama Canal » Claybourn articles and speeches
File Sea level plan for Panama Canal, 1947 Box 2 In: John G. Claybourn Papers, 1908-1966 » Topical File » Panama Canal » Claybourn articles and speeches
File Streamlining the Panama Canal, 1946 Box 2 In: John G. Claybourn Papers, 1908-1966 » Topical File » Panama Canal » Claybourn articles and speeches
File Suggested methods and equipment, dredging and mining, for converting the present lock type canal to sea level, 1946 Box 2 In: John G. Claybourn Papers, 1908-1966 » Topical File » Panama Canal » Claybourn articles and speeches
File Miscellaneous, 1921-1943 3 folders Box 2 In: John G. Claybourn Papers, 1908-1966 » Topical File » Panama Canal » Claybourn articles and speeches
File Construction, Miscellaneous papers Box 3 In: John G. Claybourn Papers, 1908-1966 » Topical File » Panama Canal