The Penobscot boom and the development of the West branch of the Penobscot river for log driving - Hempstead, Alfred Geer (Orono, Me. Printed at the University Press, 1931)
The Maine bulletin. vol. XXXIII, no. 11, May, 1931
Keywords: Penobscot river -- Hist; Lumbering -- Maine; Lumber trade -- Maine