- A Geometrical Treatise Of The Conic Sections: In Which The Properties Of The Sections Are Derived From The Nature Of The Cone, In An Easy Manner, And By A New Method
- The Sanitary Condition Of Harrisburg, Pennsylvania
- Philosophical Essays on the Following Subjects: I. On the Principles of Mechanics. II On the Ascent of Vapours, the Formation of Clouds, Rain and Dew, and on Several Other Phaenomena of Air and Water.
- An Attempt to Prove the Existence and Absolute Perfection of the Supreme Unoriginated Being: In a Demonstrative Manner
- Sir William Penn: His Proprietary Province and its Counties: Those of the Commonwealth of Pennsylvania



















