Library of Congress - History of Smyth County

https://archive.org/stream/generalresources00shef#page/n0/mode/2up

Here are some websites that are specific references to a Copenhaver name directly on the page.

http://www.ristenbatt.com/genealogy/shplst10.htm

http://ascc.artsci.wustl.edu/~stone/history/copenhaver.html

http://getafix.mathcs.wilkes.edu/lancaster/court/tax/1753Heidelberg.html

Some Links of Interest 

http://www.iberian.com/links.html

http://www.surnameweb.org/registry/c/o/p/copenhaver.shtml

http://www.lib.utexas.edu/Libs/PCL/Map_collection/map_sites/hist_sites.html

http://claynet.com/athomas/koppen/index.htm

http://www.jeffcopenhaver.com