@article {25221,
	title = {A revision of the forms of the Hairy Woodpecker (Dryobates villosus (Linnaeus))},
	volume = {Proc. 40},
	year = {1911},
	pages = {595-621},
	institution = {U.S. Nat. Museum},
	author = {Oberholser, H. C.}
}
