Sidney Wilcox McCuskey (February 28, 1907 – April 22, 1979) was an American mathematician and astronomer. He was born in Cuyahoga Falls, Ohio on February 28, 1907, the son of Charles McCuskey and Lottie (née Wilcox). In 1925 Sidney became an amateur radio hobbyist. He matriculated to the Case School of Applied Science where in 1929 he was awarded a B.S. in Civil Engineering. The following year he received his M.S. in mathematics from the Massachusetts Institute of Technology. After a stint at surveying, he was influenced by Jason John Nassau to study astronomy at Harvard University. There his graduate adviser was the Dutch-American astronomer Bart Bok. Receiving his astronomy Ph.D. in 1936 with a thesis titled The Determination of Radial Velocities with the Objective Prism, Dr. McCuskey ac