01054cam a22003011 4500 pa 41000012 DLC 20260227111852.0 791005s1940 dcu 000 0 eng c pa 41000012 (OCoLC)5471978 Pan Amer. Union NmU OCoLC DLC premarc HE230.A1 L8 380.98 Ludewig, Charles Keech, 1906- Developments in inter-American transportation and communications, 1890-1940, by C. Keech Ludewig. Fiftieth anniversary of the Pan American union, 1890--April 14--1940. Washington, D.C., Pan American Union [1940] 4 numb. l. 28 cm. Cover title. At head of title: Pan American day, April 14. Mimeographed. Transportation Latin America. Communication and traffic Latin America. Industries Latin America. Zier, Julian Gilbert., 1903- Kelbaugh, Paul Recker, 1903- 51246 51246