A letter, 17 July 1757, from T[homas] Pennant, Downing, to an unidentified fellow naturalist, ordering two copies of his new book ('the 1st volume of your History') and telling him of recent additions to his own collection.
The letter contains references to the naturalists 'B. Pontoppidan' [?Erik Pontoppidan, Bishop of Bergen], and [William] Morris of Holyhead.