Joseph Ray, 1807-1855

Joseph Ray was born 25 November 1807 in Ohio County, West Virginia.  He earned his medical degree from Ohio Medical College at the age of 22.  He left the medical profession in 1831 to join the faculty of Woodward High School as an instructor of Mathematics.  He published numerous mathematic textbooks.  He died in Cincinnati, Ohio in 1855.

Ray Arithmetic Ray Arithmetic Numbers

Practical Arithmetic, by Induction and Analysis by Joseph Ray, M.D. Published by Van Antwerp Bragg & Co., Cincinnati, 1857

Joseph Ray, 1807-1855