1943. Studies in the life history of the Song Sparrow II. Trans. Linn.

Soc. N.Y. Vol. VI, viii + 329 pp., frontispiece, 6 figs.

PETERSON, ROGER TORY

1947. A field guide to the birds. Houghton Mifflin Co., Boston,

Massachusetts. xxiv + 290 pp., 60 pls.

SALT, W. RAY

1954. The structure of the cloacal protuberance of the Vesper Sparrow

(_Pooecetes gramineus_) and certain other passerine birds. Auk,

71:64-73, 5 figs.

SAUNDERS, ARETAS A.

1951. A guide to bird songs. Doubleday and Co., Garden City, New York.

xiv + 307 pp., 201 figs.

STONE, WITMER

1937. Bird studies at Old Cape May. D.V.O.C. Philadelphia, Vol. II, pp.

521-941.

TOMKINS, IVAN R.

1941. Notes on Macgillivray's Seaside Sparrow. Auk, 58:38-51, pls. 2,

3.

_Transmitted June 14, 1956._

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