Herbert Hoover, Arnold S. Rice, United States. President (1929-1933 : Hoover) (1971). “Herbert Hoover, 1874-1964; chronology-documents-bibliographical aids”, Oceana Pubns
John Adams, Charles Francis Adams (1851). “The Works of John Adams, Second President of the United States: With a Life of the Author, Notes and Illustrations”, p.273
"Discourses on Davila : A Series of Papers on Political History first published in the Gazette of the United States". Book by John Adams, No. 13, 1805.