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 codperation 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 codperation 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. 
