BIO: M. J. MUMPER, York County, PA

Contributed for use in the USGenWeb Archives by Abby Bowman

Copyright 2005.  All rights reserved.
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History of York County, Pennsylvania.  John Gibson, historical editor.
Chicago: F. A. Battey Publishing Co., 1886.
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Part II, Biographical Sketches, York Borough, Pg 36

M. J. MUMPER.  The Keystone Chain Works are owned and operated by two 
representatives of the oldest families in the county - M. J. Mumpter and David 
Trout.  Mr. Mumper, the senior proprietor, and a practical workman, is a native 
of Adams County, and a descendant of the Mumper family of the northern end of 
York County.  He learned his trade in Dillsburg, commencing at the age of 
sixteen years, and has followed it since in Dillsburg and York.  The present 
business plant was first started by Addison Sheffer, of York, upon a very 
limited scale, between King and Market Streets, in 1870.  In 1880 Mr. Mumper, 
under the firm name of Mumper & Walker, bought the works, and these partners 
continued together one year, when Mr. Walker withdrew.  In 1882 Mr. Mumper sold 
an interest to David Trout, and the present firm was established.  In the spring 
of 1884 their works were destroyed, and they erected extensive buildings in West 
York.  The works have been steadily on the increase, and are under the personal 
supervision of Mr. Mumper.  They are now selling from $40,000 to $50,000 worth 
of goods in all the markets of the United States.  They have in their works 
about thirty employees.  Mr. Trout is a native of Hopewell Township, and 
previous to his present co-partnership was a farmer in York County.