See document page 297 - 302
Maine: Encyclopedia Britannica
Reading in the Bowdion Orient
that Chamberlain wrote the Encyclopedia Britannica article for the State of Maine, I thus went on the hunt.
After a long search, google not having things as well indexed as one would like, I have finally found it.
If you are in doubt who J.L.C. may be please see page 1 or the Index
My searches also turned up the next edition
But I knew this could not be written by him as it lists under governors of Maine, Joseph L. Chamberlain.
Other places to view online: