From William Heberden8
Printed form with MS insertions: University of Pennsylvania Library
<Before June 10, [1774?9]: Presents his compliments and invites Franklin to dine on Friday, June 10, at four o’clock.>
8. For the eminent physician, BF’s acquaintance of long standing, see above, VIII, 281 n.
9. During BF’s second British mission June 10 fell on a Friday in 1768 and 1774, and during his first mission not at all. Our only reason for guessing 1774 is that it was the choice of whoever compiled the Calendar of the Papers of Benjamin Franklin in the Library of the University of Pennsylvania … (Philadelphia, 1908), p. 402. On the back of Heberden’s card is a faded note in pencil, which may have provided some clue for the compiler but is now illegible.