Here is a little more on Overbaugh from "Sharps Firearms" by Sellers.
Pg 324, talking about the team shooting at Creedmoor, May 27, 1876, "Charles E. Overbaugh(a that time a new employee of the Sharps firm) fired the highest score made to that time at Creedmoor."
Pg 252 "this is one of the "Overbaugh" Schuetzen rilfes. This group of modified Model 1874 rifles was made by Charles E. Overbaugh, a New York City gunsmith, for the New York Central Schuetzen Corps as a special factory order , because the factory did not have the manpower to turn them out themselves."
Pg 241, describing the development of the models 1875 and 1877 "Besides King, the other persons involved were: Richard S. Lawrence, Charles E. Overbaugh and O. A. Zischang."
