Today I journeyed to the state library to have a look through old newspapers.  Our state library has a vast collection of these on microfilm.  Sadly, I was only able to find two tidbits:

From the Mt. Carmel Item on February 14, 1920:

Civil War Veteran, J.B. Koppenhafer, died this morning of pneumonia.

and from the Sunbury Daily, May 4, 1931:

Funeral services were held today for Mary Koppenhaver at the home of her son, Andrew.  Burial will be in Shamokin Cemetery.

Not what I was hoping to find, however, two sources for information in my tree.