PENNANT, Thomas (1726-98) Welsh naturalist, traveller and writer. Autograph letter signed, September 22nd 1767. Sent from his home, Downing, Flintshire. To an unnamed correspondent, thanking him for permission to use his engravings of birds. 'I think myself much oblig'd to you for your kind permission of engraving your two birds which I shall publicly acknowledge in such terms as I think you merit, in the appendix of the old edition of the Zoology which will appear this winter'. 4to, one side