The Summer 2005 issue of ANTIQUES & FINE ART magazine on p. 145 pictures an excellent c.1793 portrait of Dr. Isaac Senter (1753-1799) of Newport, RI, by the artist Samuel King. Dr. Senter was born in 1753 in Londonderry, NH. The original of the portrait is in the collection of the Rhode Island Historical Society, Providence, RI.
I am scanning this page in case any of Dr. Senter's descendants might like a copy, either by email or by postal mail. Somebody in the family ought to have it--it's too good to be missed by the family.
My email address can be found by clicking on my name above. Please reply to me directly at this address by email rather than by posting a reply on this site, which I may not see.
If it were a portrait of a Mr. Pease, I'd sure want someone to do the same for me.