English: Lithograph of Oliver Byrne (from the original in the collection of Gerald L. Alexanderson, Michael and Elizabeth Valeriote Professor in Science at Santa Clara University). The caption reads as follows:

OLIVER BYRNE.

LATE PROFESSOR OF MATHEMATICS, COLLEGE FOR CIVIL ENGINEERS.

Author of

“The New and Improved System of Logarithms.”_“The Doctrine of Proportion.”_“The Practical, Complete, and Correct Gager.”_“The Elements of Euclid by Colours.”_“A Practical, Treatise on Spherical Trigonometry.”_“How to Measure the Length of a Degree on the Earth's Surface by the assistance of Railroads." &c., _&c.,_&c.

Inventor of

“The Patent Calculating Instruments.”~“The System of Facilitating the Acquirement of Geometry, & of other Linear Arts and Sciences by Colours, &c.”~“Proposer of the New Theory of the Earth, which accounts for many Astronomical, Geographical, and

Geological Phenomena, hitherto unaccounted for.”