Statistics for occurrence #1 of “William Spencer” in chapter 5, page 21 of Lucius R. Paige, History of Cambridge, Massachusetts, 1630-1877, with a genealogical register:
...nother important board of officers was elected, at the same meeting:—
Also, there was then chosen, to join [with] James Olmsted, Constable, John Benjamin, Daniell Denison, Andrew Warner, William Spencer ; which five, according to the order of Court, [shall] survey the town lands, and enter the [same in] a Book appointed for that purpose.
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