WHITEHEAD, Alfred North. Process and Reality an Essay in Cosmology. NY, 1929. Original cloth. FIRST EDITION, SIGNED. -- GUMMERE, John. An Elementary Treatise on Astronomy. Philadelphia: Kimber & Sharpless, 1837. Contemporary mottled calf gilt. -- BREWSTER, David. Plates Illustrative of Ferguson’s Astronomy. Philadelphia: Abraham Small, 1817. Modern half leather. -- HERSCHEL, John F.W., Sir. A Treatise on Astronomy. Philadelphia: Carey, Lea & Blanchard, 1834. Original cloth-backed boards. -- WATTS, Isaac. The Knowledge of the Heavens and the Earth Made Easy. L, 1760. Contemporary calf. Sixth edition. -- And another copy in modern boards. -- GIOVANNI, Santini. Elementi di Astronomia. Padua, 1819, 1820. 2 volumes. Modern leather-backed boards. FIRST EDITION. -- And 6 others. Together, 13 works in 14 volumes, various 4to and 8vo sizes, most illustrated, condition generally good. Complete list available on request.