Chidsey, Donald Barr The Panama Canal an informal history. - New York Crown Publishers [1970] - 216 p. illus., map, ports. 22 cm. Bibliography: p. 205-211. LCCN: 76125039 //r84 Subjects--Geographic Terms: Panama Canal Panama--History. LC Class. No.: F1569.C2 / C48 1970 Dewey Class. No.: 986.3