Canal or railroad
Subtitle: ?  Imitation and innovation in the response to the Erie Canal in Philadelphia, Baltimore, and Boston.
Series: Transactions of the American Philosophical Society, new ser., v. 51, pt. 7
Publisher: American Philosophical Society
Published: 1961
Place of publication: Philadelphia
Language: eng
Number of pages: 106
Subjects: Canals -- United States -- History; Railroads -- United States -- History; Erie Canal (N.Y.)
Notes: Issued in microfilm form in 1960 as thesis, Columbia University, under title: Imitation by canal or innovation by railroad.  Bibliography: p. 98-103.