"Washburn Family Foundations in Normandy, England and America" by Mabel Thacher Rosemary Washburn - book A must have!
"The Spencers, A Personal History of an English Family" by Charles Spencer - book
www.gudelius.de ( for info on the Gudelius/Gutelius family )
www.rootsweb.com ( for info on the Gudelius/Gutelius family )
www.plymouthcolony.net ( for info on the Washbourne/Washburn family )
www.maltbyfamily.net ( for info on the Washbourne/Washburn family )
www.rampantfoxes.wordpress.com ( for info on Seth Washburn and the Battle of Bunker Hill )