Statistics for occurrence #1 of “Boston, Mass.” in alphabetic letter T, entry group 2, entry thatcher-henry-knox of Harper's Encyclopedia of United States History:
...On May 10, 1865, Thatcher received the surrender of the Confederate naval forces at Mobile and on the Alabama River.
In July, 1866, he was made rear-admiral, and in May, 1868, retired.
He died in Boston, Mass. , April 5, 1880.
...