232 UNIVERSITY OF COLORADO STUDIES 



Ridgway, Robert. "A monograph of the Genus Leucosticte, Swainson, or gray-crowned 

 purple finches." U.S. Geol. and Geog. Surv. Terr. Bull., Vol. I, No. 1, 2d ser., 

 pp. 51-82, 1875. [Records some of Mrs. Maxwell's specimens.] 



. " Scops fiammeola in Colorado." Bulletin Nuttall Ornithological Club, Vol. V, 



p. 185, 1880. [Notes specimen in Mrs. Maxwell's collection.) 



. "Mrs. Maxwell's Colorado Museum; catalogue of the birds." Field and Forest, 



Vol. II, pp. 195-198, 1887. 



. "Mrs. Maxwell's Colorado Museum; additional notes." Field and Forest, 



Vol. Ill, p. n, 1887. 



The birds of North and Middle America. U.S. National Museum, Null. No. 50, 



Parts I, II, III, IV. 



Sclatee, William L. A history of the birds of Colorado, London, 191 2. [A general 

 treatise, giving records and descriptions of all Colorado species. Many of the alti- 

 tudes indicated on the topographic map are erroneous.] 



Smith, Horace G. "Random notes on the distribution of some Colorado birds, with 

 additions to the state avifauna." The Auk, N.S., Vol. XXV, pp. 184-191, 1908. 

 [Contains Boulder County records.] 



Sprague, W. A. "The dwarf thrush in Colorado." The Auk, N.S., Vol. XIII, p. 85, 

 1896. [One taken at Magnolia. Author's name erroneously appears as U. A. 

 Sprague.] 



Widmann, Otto. "List of birds observed in Estes Park, Colorado, from June 10 to 

 July 18, 1910." The Auk, N.S., Vol. XXVIII, pp. 304-319, 1911. [Some Boulder 

 County observations.] 



