With rifle & plow; stories of the western Pennsylvania frontier,

Mode of access: Internet.

A history of Bristol borough in the county of Bucks, state of Pennsylvania, anciently known as "Buckingham"; being the third oldest town and second chartered borough in Pennsylvania, from its earliest times to the present year 1911.

Mode of access: Internet.

Proceedings of the Senate of Pennsylvania in commemoration of Hon. Israel W. Durham, late a senator from the Second District, Tuesday, March 7, 1911.

Mode of access: Internet.

Bowmansville : Youth hostels and trails / Compiled by workers of the Lancaster County unit of the Writers' Program of the Work Projects Administration in the State of Pennsylvania. Statewide sponsor, Pennsylvania Department of Public Instruction.

Co-sponsored by the Bowmansville Youth Hostel Committee, Charles D. Spotts, Chairman.

Proceedings of the Senate of Pennsylvania in commemoration of Hon. John W. Crawford : late a Senator from the forty-fifth district /

Pa. State Docs. class. no. PGA 1.14/4:C899

Proceedings of the Senate of Pennsylvania in commemoration of Hon. Thomas B. Harper,

Mode of access: Internet.

Memorial proceedings of the Senate upon the death of Hon. Algernon B. Roberts, late a senator from the twelfth district of Pennsylvania.

Mode of access: Internet.

The Pennsylvania legislator; III, VI-VII political essays written for members of the general assembly,

Mode of access: Internet.

Pennsylvania, the story of a commonwealth,

Map on lining-papers.

Petroglyphs in the Susquehanna River near Safe Harbor, Pennsylvania ...

Notes and bibliography: p. 52-59.

Manual of heavy artillery service. Prepared for the use of the army and militia of the United States.

Errata slip inserted.

Mathematics in management; proceedings of a short course conducted by [Dept. of Engineering Mechanics and General Extension Services, the Pennsylvania State University, with cooperation from General Electric Co. and others] June 13-17, 1955.

Includes bibliographies.

A half century of bird life in Berks County, Pennsylvania,

Mode of access: Internet.

The bird life of Berks County, Pennsylvania /

Mode of access: Internet.

Birds of the Pocono Mountains, Pennsylvania /

Bibliography: p. 73-76.