[John MacWhirter, Scottish landscape painter.] Autograph Letter Signed ('J MacWhirter') to 'W. Agnew Esq', i.e. the London art dealer Sir William Agnew, thanking him for his 'generous praise', and praising him in turn, in contrast to 'the Critics'.

2pp, 12mo. Bifolium. In good condition, lightly aged, with traces of mount adhering to blank reverse of second leaf. A white label has been stuck over the letter's salutation, but MacWhirter writes the name of the recipient at the end of the letter: 'W. Agnew Esq'. He cannot express the pleasure he felt on receiving Agnew's letter. 'I always knew that you & yours had a kindly feeling to me – but your generous praise of my work this year has touched me, I value it much, because I like you, & because having seen & known the finest things of the Century – with power to appreciate them, You have a right to speak with authority & not as one of the Critics – [last word underlined]'. He ends with renewed thanks.