U.S. Mail by pneumatic tube
Contributors: American Pneumatic Service Company
Publisher: [publisher not identified]
Published: 1904
Place of publication: United States?]
Language: eng
Subjects: Postal service; Pneumatic-tube transportation
Notes: Cover title.

Description of the machinery of the American Pneumatic Service Company used in the "Model Post Office" exhibit of the United States Post Office Department at the Louisana Purchase Exposition.