↑ "Records of the Society of Friends of the City of New York and Vicinity, from 1640 to 1800", in The New York Genealogical and Biographical Record. (New York, New York: New York Genealogical and Biographical Society) Vol. 3, p. 187.
The children of John ... Adams ... and of Elizabeth of fflushing: ... Phebe Adams borne ye 9th of ye 12th mo., 1690. [Note: In old-styles dates, the twelfth month is February. For comparison to the modern calendar, it corresponds to the following year. More info may be found here.]