1From John Adams to François Adriaan Van der Kemp, 9 April 1811 (Adams Papers)
...of Winds are Still unknown. Earth quakes and Volcanos are Still misteries, and no Man can...
2From John Adams to François Adriaan Van der Kemp, 8 January 1806 (Adams Papers)
...or the other Mans Hypothesis of hot stones from a Volcano in the Moon.
...may have fallen, in the neighbourhood of Volcanoes, is not impossible, nor improbable:...
4From John Adams to François Adriaan Van der Kemp, 3 March 1804 (Adams Papers)
...all the Security we have against roasting in volcanos, writhing with the Tortures of grief,...