CONTRIBUTORS. 21 
cal newspapers in which birds are mentioned, which have 
been sent to me by many helpers, are too numerous and the 
sources from which they came too various to be given in- 
dividual mention here. 
Dr. Frank W. Langdon, Mr. Charles Dury and Dr. Josua 
Lindahl have contributed notes covering a long series of 
years in the vicinity of Cincinnati and elsewhere in the state ; 
and Mr. Wm. B. Haynes, of Akron, has given special at- 
tention to the shore birds of the natural lakes of that vicin- 
ity. 
Mr. H. C. Oberholser has been good enough to go over 
the list of species here recorded, making suggestions and 
comments which have greatly aided me in the final arrange- 
ment of the catalogue. His “Birds of Wayne County, 
Ohio,” and Rev. W. F. Henninger’s “Birds of Middle 
Southern Ohio,” have been valuable aids in the revision of 
the work. 
In 1891 Messrs. L. M. McCormick and G. D. Wilder pre- 
pared a list of the birds of Lorain county, from which I 
have been able to add not a little to our knowledge of the 
birds of the northern parts of our state. 
To these gentlemen and to all who have given so freely 
of their time and notes I wish to tender my grateful thanks. 
They have made a difficult task possible of accomplishment. 
In addition to the counties represented upon the list given 
above, the writer has been able to spend a greater or less time 
in studying the birds in the following counties: Athens, 
Fairfield, Gallia, Huron, Lawrence, Medina, Meigs, Mus- 
kingum, Ottawa (islands only), Perry, and Washington. 
The work in all of these counties, except Huron and Medi- 
na, was done in company with Rev. W. L. Dawson. At 
Chippewa Lake, Medina county, Mr. R. L. Baird accom- 
panied me. Mr. Baird has also been associated with me 
in considerable of the later work about Oberlin. At the 
Licking Reservoir, which included parts of Licking, Fair- 
field, and Perry counties, Messrs. E. J. Arrick and Irving 
A. Field also participated. Several days were spent in the 
vicinity of Jefferson, Ashtabula county, with Mr. Robt. J, 
