Record for John Kirby _FOOT: Ancestry.com and The Church of Jesus Christ of Latter-day Saints, 1880 United States Federal Census (Provo, UT, USA: The Generations Network, Inc., 2005), Database online. Midland Mine, Allegany, Maryland, ED 16, roll T9_494, page 377.3000, image 0155.
Record for John Kirby _FOOT: Ancestry.com, 1870 United States Federal Census (Provo, UT, USA: The Generations Network, Inc., 2003), Database online. District 4, Allegany, Maryland, post office Westernport, roll 566, page 106, image 213.