1828
Went to Paris to canvass. Visited Cuvier.
1829
Returned to the United States, scoured the woods for more material for his
biographies.
1830
Returned to London with his family.
1830-1839
Elephant folio, _The Birds of North America_, published.
1831-39
_American Ornithological Biography_ published in Edinburgh.
1831
Again in America for nearly three years.
1832-33
In Florida, South Carolina, and the Northern States, Labrador, and Canada.
1834
Completion of second volume of "Birds," also second volume of _American
Ornithological Biography_.
1835
In Edinburgh.
1836
To New York again--more exploring; found books, papers and drawings had
been destroyed by fire, the previous year.
1837
Went to London.
1838
Published fourth volume of _American Ornithological Biography_.
1839