Four letters to the joint board of directors of the Delaware and Raritan Canal and Camden and Amboy Railroad companies /

On Sabbath desecration by the companies: revised and expanded version of letters "published about a year ago in one of the newspapers of Trenton."

A comprehensive study of pollution and its effect on the waters within the St. Jones River drainage basin; a report to the Water Pollution Commission of the State of Delaware,

Bibliography: leaf 163.

Tocks Island Lake development : a comprehensive evaluation of environmental quality : Delaware River Basin Tocks Island Lake, Pennsylvania, New York, Delaware Water Gap ... Kittatinny Mountain Project ... /

Cover title.

Observance of the three hundredth anniversary of the first permanent settlement in the Delaware river valley, 1938 ...

Prepared by the United States Delaware valley tercentenary commission.

Old New Castle and modern Delaware, the tercentenary of the founding of New Castle by the Dutch;

Mode of access: Internet.

Following the Connecticut trail from Delaware river to Susquehanna valley,

Bibliography: p. 179-181.

The problem of water resources administration, with special reference to the Delaware River Basin; a report submitted to the Water Research Foundation for the Delaware River Basin by the Syracuse University Research Group.

Mode of access: Internet.

A review of an Address of the Joint Board of Directors of the Delaware and Raritan Canal and Camden and Amboy Railroad Companies to the people of New Jersey /

Errata: p. [84]

Laws of the State of Delaware.

Title varies slightly.

The Martinsburg formation (Middle and Upper Ordovician) in the Delaware Valley, Pennsylvania-New Jersey /

Prepared in cooperation with the Pennsylvania Geological Survey.

Ground-water resources of the White River basin, Delaware County, Indiana /

"September 1982."

Delaware River watershed: New York, Pennsylvania, New Jersey, Delaware and Maryland. Program for run-off and waterflow retardation and soil erosion prevention.

Report includes appendices, survey report.

A fiscal survey of the public school system of Delaware.

Mode of access: Internet.

Messages from the governors of Maryland and Pennsylvania, transmitting the reports of the joint commissioners, and of Lieut. Col. Graham, U.S. topographical engineers, in relation to the intersection of the boundary lines of the states of Maryland, Pennsylvania and Delaware, being a portion of Mason and Dixon's line.

First edition, 1859.

Bulletin - University of Delaware, Agricultural Experiment Station.

Bulletin no. 50 is a broadside 61 1/2 cm. x 48 1/2 cm.