  Eclipsing binaries are vital for directly determining stellar parameters
without reliance on models or scaling relations. Spectroscopically derived
parameters of detached and semi-detached binaries allow us to determine
component masses that can inform theories of stellar and binary evolution. Here
we present moderate resolution ground-based spectra of stars in close binary
systems with and without (detected) tertiary companions observed by NASA's
Kepler mission and analyzed for eclipse timing variations. We obtain radial
velocities and spectroscopic orbits for five single-lined and 35 double-lined
systems, and confirm one false positive eclipsing binary. For the double-lined
spectroscopic binaries we also determine individual component masses and
examine the mass ratio M_2/M_1 distribution, which is dominated by binaries
with like-mass pairs and semi-detached classical Algol systems that have
undergone mass transfer. Finally, we constrain the mass of the tertiary
component for five double-lined binaries with previously detected companions.
