↑Ancestry.com. 1870 United States Federal Census. (Name: The Generations Network, Inc.; Location: Provo, UT, USA; Date: 2003;) Database online. Derry, Westmoreland, Pennsylvania, post office Blairsville, roll 1465, page 85, image 167.
Record for Mary Allison _FOOT: Ancestry.com, 1870 United States Federal Census (Provo, UT, USA: The Generations Network, Inc., 2003), Database online. Derry, Westmoreland, Pennsylvania, post office Blairsville, roll 1465, page 85, image 167.
↑Ancestry.com. 1860 United States Federal Census. (Name: The Generations Network, Inc.; Location: Provo, UT, USA; Date: 2004;) Database online. Derry, Westmoreland, Pennsylvania, post office Blairsville, roll M653_1195, page 184, image 298.
Record for Mary Allison _FOOT: Ancestry.com, 1860 United States Federal Census (Provo, UT, USA: The Generations Network, Inc., 2004), Database online. Derry, Westmoreland, Pennsylvania, post office Blairsville, roll M653_1195, page 184, image 298.