HOUGHTON MIFFLIN COMPANT 
4 PARK. STREET • BOSTON 
April 28th, 1911. 
Dear Mr, Brewster, 
Would it trouble you to 
look over the enclosed paper on the 
Bluebird, by Enos Mills, at your leis¬ 
ure, and let me know what you think of 
it. Some of the observations--that 
of the young bluebirds at play, for 
instance--seera to be a little unusual. 
Yours sincerely, 
William Brewster, Esq., 
Concord, Mass. 
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