1901 Extracts from Compressed Air a Monthly Magazine Devoted to the Useful Application of Compressed Air Vol. V. No. 12
New York: Compressed Air, 1901. (4) pages; with a few black and white illustrations, show "Dispatching a Mail Bag in the System of the United States Pneumatic Dispatch Co., Burlington, N.J., U.S.A." a view of the tube & carrier & another of a view of an enormously lengthy pneumatic tube.....