1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
2Pittsburgh Post Gazette, newspaper, obituary of Kenneth Burkhart, 15 Nov 2005.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.
1Hartley, Betty, Descendants of Hans Burkhart, http://freepages.history.rootsweb.com/~harringtonfamilies/Burkhart6.htm.