The German Pietists of provincial Pennsylvania,

"Of this letter press edition five hundred copies have been printed for sale. No. 67."

History of the Philadelphia Brigade. Sixty-ninth, Seventy-first, Seventy-second, and One hundred and sixth Pennsylvania Volunteers.

Mode of access: Internet.

The history of Bucks County, Pennsylvania : from the discovery of the Delaware to the present time /

Appendix : Flora, by I.S. Moyer--Birds, by Joseph Thomas-Mammals, by Joseph Thomas--Compass. Variations of the compass needle.

Early history of the University of Pennsylvania from its origin to the year 1827.

Mode of access: Internet.

Pennsylvania, colonial and federal; a history, 1608-1907.

Mode of access: Internet.

The railroad question; a historical and practical treatise of railroads, and remedies for their abuses,

Mode of access: Internet.

Redemptioners and indentured servants in the colony and commonwealth of Pennsylvania, [electronic resource]

Bibliography: p. 120-125.

Railroad transportation; its history and its laws,

Mode of access: Internet.

Animal locomotion. The Muybridge work at the University of Pennsylvania.

Mode of access: Internet.

Seeing Pennsylvania,

Bibliography: p. 336-338.

Principles of railroad transportation,

"References" at end of most of the chapters.

How to name the birds : a pocket guide to all the land birds and to the principal water fowl normally found in the New England states, New York, Pennsylvania and New Jersery, for the use of field ornithologists /

Includes index.

Railroad valuation by the Interstate commerce commission,

Mode of access: Internet.

History, manners, and customs of the Indian nations : who once inhabited Pennsylvania and the neighboring states /

Includes bibliographical references and index.

Annual report - Pennsylvania State Geologist.

Atlases accompany 1885; 1886, pt. 3-4.