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.