July 31/65
My dear Sir
Mr Walker <1> is very anxious to include your photographic resemblance in a picture to be engraved. I shall be delighted to go down to posterity in the same record with you & hope you will give him a sitting.
Yours faithfully
JFW Herschel &c &c
Notes:
1. This note written on a calling card reading ‘Mr Walker, 64 Margaret Street, Cavendish Square, W.’ William Walker (1791-1867), was an engraver, miniature painter and photographer. He had been a regular correspondent with WHFT.