http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Sketch of the internal improvements already made by Pennsylvania
with observations upon her physical and fiscal means for their extension; particularly as they have reference to the future growth and prosperity of Philadelphia
48 pages, 1 unnumbered page : 3 folded maps. ; 22 cm.
Illustrated by maps of the head-waters of the principal rivers of the state.
Microfilm. Ann Arbor, Mich., Xerox University Microfilms, 1973. 35 mm. (American Culture Series, reel 558.3)