Statistics for occurrence #1 of “Charter Oak” in entry united-states-of-america-connecticut of Harper's Encyclopedia of United States History:

.........October, 1855 Act abolishing school societies and putting the support of schools upon towns, who are to elect a board of school visitors of three, six, or nine members......July 1, 1856 Charter Oak at Hartford blown down......Aug. 21, 1856 State constitution amended by vote of 7,290 to 6,062, so that judges of the Supreme Court of Errors and Superior Court shall sit eight years, but may be ...
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Charter Oak 6 4 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.