"Pat Robertson: Crack In Washington Monument A Sign From God, Earthquake Signals Coming Of Christ" by Paige Lavender, www.huffingtonpost.com. August 26, 2011.
George Whitefield (1828). “Sermons on important subjects ... With a memoir of the Author by S. Drew; and a dissertation on his character, preaching, etc., by Joseph [or rather Josiah] Smith”, p.590