Set of 6 slide rules and 8 mathematics books.
Books include: AMERICAN TELEPHONE AND TELEGRAPH COMPANY, Notes on the Mathematics of the Principles of Electricity (1930); SMOLEY, Constantine, Smoley's Tables (1914); PALMER, Claude Irwin and LEIGH, Charles Wilber, Plane and Spherical Trigonometry (1934); SMITH, David, Number Stories from Long Ago (1919); FRY, Thornton, Probability and its Engineering Uses (1928); ULLMAN, Neil, Statistics: An Applied Approach (1972); EZEKIEL, Mordecai, Methods of Correlation Analysis (1941); SOMMERS, Hobart, The Slide Rule and How to Use it (1942).
Largest book is H: 9 1/4 x W: 6 1/4 x D: 1 5/8 in.
Slide rules include 1931 and 1936 circular logarithmic slide rules, Keuffel & Esser Co. 1900 logarithmic slide rule, Pickett 1960 Model N 3-ES Power Log Exponential metal slide rule, and 1941 circular slide rule with binary and logarithmic slide rules. Sommers slide rule book includes case for slide rule on interior front board. All slide rules with cases.
Largest slide rule is 8 3/4 in. diameter.
Fair to poor. Books have toning throughout. Some losses to spines. Rubbing and scuffed. Slight rules have slight losses to cases, and scuffing commensurate with use.
From the Estate of John A. Davidson, Jr. Proceeds to benefit the APL of Lorain County and the Dittrick Museum.