Metcalf, C.L.  Black Flies and Other Biting Flies of the Adirondacks, with Control of Biting Flies in the Adirondacks by Metcalf and W.E. Sanderson. NYS Museum Bulletin No, 289, January 1932. Albany: University of the State of New York, 1932. 78 pp., printed wrappers. Plum 2967 and 2969. The classic study on the subject. Light soiling to wrappers. Very good.