Diary of John Quincy Adams, volume 2
1786-04-12
I went down to our Office,1 to see if there was a Gravesande, there, but none was to be found;—while we were at dinner my Cousin came in from Boston, where he went last night from Cambridge. In the afternoon Charles, and I went out fowling, but came home, as deeply laden as we went. We went in the Evening, and Cranch play'd to an Echo; it has a very agreeable effect.
That is, JA's law office, a ground-floor room in what is now known as the John Quincy Adams Birthplace.