Developments in inter-American transportation and communications, 1890-1940
By: by C. Keech Ludewig.  Fiftieth anniversary of the Pan American union, 1890--April 14--1940.
Contributors: Zier, Julian Gilbert., 1903-; Kelbaugh, Paul Recker, 1903-
Publisher: Pan American Union
Published: 1940
Place of publication: Washington, D.C
Language: eng
Subjects: Transportation -- Latin America.; Communication and traffic -- Latin America.; Industries -- Latin America.
Notes: Cover title.
At head of title: Pan American day, April 14.
Mimeographed.