Cubbage, J.C., J. Calambokidis, K.C. Balcomb, and G.H. Steiger. 1987. Humpback whale (Megaptera novaeangliae) distribution and abundance in the Gulf of the Farallones National Marine Sanctuary. Annual Report for Contract No. CX 8000-6-0003 from National Park Service and Gulf of the Farallones National Marine Sanctuary, San Francisco, California. 53pp.