Patricia Harris, David Lyon: You know you're in Massachusetts when... 101 quintessential places, people, events, customs, lingo, and eats of the Bay State. Insiders' Guide, Guilford, Conn. 2006, ISBN 978-0-7627-4132-8 (Online in der Google-Buchsuche).
Mountain Day. Williams College, abgerufen am 22. August 2014 (englisch).
zdb-katalog.de
William H. Tague: The Rise and Evaporation of the Greylock Tramway Authority. In: Williams College (Hrsg.): Berkshire Review. BandIII, Nr.1, 1967, ISSN0005-920X.