Statistics for occurrence #1 of “Isaac Foster” in chapter 8, page 34 of Historic leaves, volume 2, April, 1903 - January, 1904:

...shoot. He was the son of Solomon Phipps, before mentioned, a prominent and useful citizen of that time. His name is the second on the list of those who graduated from Harvard College in 1671. Isaac Foster , also from Charlestown, stood first, and Samuel Sewall (a name distinguished in our Colonial history) came third. The rest of the class, eleven in number, were Samuel Mather, Samuel Danforth, Peter...
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Isaac Foster 17 12 3 0 0 user votes

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