Proceedings of the 1907 Maine State Federation of Labor convention in Portland, Maine. Printed in Maine Labor Journal, Vol. 1, No. 3, E. J. Graham, Editor and Publisher, Millinocket, Maine.
Maine State Federation of Labor, "Maine Labor Journal Containing Proceedings of the Fourth Annual Convention of the Maine State Federation of Labor, held at Portland, June 4, 5, 6, 1907" (1907). Maine History Documents. 513.
publisher's version of the published document