From William Heberden3
AL: Historical Society of Pennsylvania
[Before March 20, 1761?]4
Dr. Heberden sends his compliments to Dr. Franklin and desires the favor of his company at dinner on friday the 20th of March at half an hour past three.
3. On Dr. Heberden, see above, VIII, 281 n.
4. March 20 fell on a Friday in both 1761 and 1767. According to editorial practice, this document is placed at the earlier of the two dates.