Diary of John Adams, volume 1 Previous document in volume Sunday. May 4th. 1766. Next document in volume Monday May 26th. 1766. Sunday. May 18th. 1766. JA Sunday. May 18th. 1766. Adams, John Sunday. May 18th. 1766. Mem. to write some Speculations, upon the Union of Legislative and Executive Powers—and upon the Knot, the Junto, the Combination.