SOURCES OF INFORMATION CONTRIBUTORS. 19 



SOURCES OF INFORMATION. 



In the preparation of this catalogue the author has re- 

 ceived much valuable assistance from many sources. He 

 has freely consulted first of all Dr. J. M. Wheaton's great 

 work, and has taken from it many facts. Cook's "Birds of 

 Michigan," Butler's "Birds of Indiana," Warren's "Birds 

 of Pennsylvania," Ridgway's "Birds of North and Middle 

 America," and Nehrling's "Our Native Birds of Song and 

 Beauty," have proved valuable helps in many ways. With- 

 out the material support and hearty cooperation of the Ohio 

 State Academy of Science, particularly its committee having 

 in charge the McMillin Fund for research, this catalogue 

 would not have appeared at this time. To Professor Albert 

 A. Wright, for valuable and timely suggestions and for 

 help in the selection of a map ; and to Rev. W. L. Dawson, 

 for cooperation and criticism in the compilation of the list 

 of species, I desire to make grateful acknowledgment here. 

 To all those whose names appear below, who gave freely 

 of their time and knowledge of the birds in their localities, 

 is largely due the approximation to completeness of this 

 catalogue. Many have gone out of their way to help the 

 work along. With such an enthusiastic company of friends 

 there is great hope for the future of our native birds. 



CONTRIBUTORS. 



The following persons have returned lists of the birds of 

 their localities checked upon provisional lists which were 

 furnished for that purpose : 



Allen Homer C. Bennett, M.D., Lima. 



Ashland C. L. Metcalf, McZena. 



Ashtabula W. P. Holt, Rev. J. M. Keck, Geneva, Robt. J. 

 Sim, A. W. Galpin, Jefferson. 



Clark Leander S. Keyser, Springfield. 



Columbiana T. C. Randolph, J. W. Suliot, Salem. 



Crawford Hiram B. Sears, Bucyrus. 



Cuyahoga A. Hall, Lakewood; Prof. Francis H. Herrick, R. J. 

 Tozer, Cleveland. 



