Brady, Tim (Winter 1997). "Anson Burlingame: Diplomat, Orator"(PDF). JAAER: The Journal of Aviation/Aerospace Education and Research. Daytona Beach, FL: Embry-Riddke Aeronautical University. p. 17.
The relationship between Brooks and Butler is often reported inaccurately. "In reality, Brooks' father Whitfield Brooks, and Andrew Butler were first cousins." Mathis, Robert Neil (October 1978). "Preston Smith Brooks: The Man and His Image". The South Carolina Historical Magazine. 79 (4): 296–310. JSTOR27567525.