Blaise Pascal French Mathematician c. 1850's fine India Proof engraved portrait February2018 Map was backed with linen

Map was backed with linen in the 19th century

slide rule

4 1/4" H x 3" W

Sonnets of Keats

Wood engraved frontis and half-title

Blaise Pascal French Mathematician c. 1850's fine India Proof engraved portrait February2018 Map was backed with linenPascal. (Old Prints, 19th Century Prints, Proofs, Mathematicians, Philosophers, Blaise Pascal). Issued c. 1850's, London by the Society for the Diffusion of Useful Knowledge. Engraved by Meyer. Beautiful mid 19th century stipple engraved mounted "India Proof." A beautiful rich dark impression. Bottom left of the sheet is seen the word "proof". Nice looking example, pleasing age patina, light minor scattered spotting, any minor age flaws easy to