Engraved copperplate Certificate, completed in manuscript and signed by E. Gilbert Highton, with a long 'Private note' by him, notifying Williamson of his election to Fellowship in the Royal Society of Literature.

4to bifolium (leaf dimensions 26 x 20.5 cm). The notification certificate is on the recto of the first leaf, and Highton's letter is on the recto of the second. Versos of both leaves blank. Good, on lightly aged and creased paper, with 5 cm closed tear to margin of second leaf caused by removal of letter from stub, traces of which still adhere to the verso of the second leaf. The certificate is tastefully printed in black, with the Society's crest in red in the top left-hand corner. The Society's address on the letterhead has been corrected by Highton from 4 St Martin's Place to 21 Delahay Street, St James's Park. The 'private note' (twenty-five lines including seventeen-line postscript) covers the whole of the recto of the second leaf. Highton congratulates Williamson, and gives some information regarding the Society before concluding with information regarding his forthcoming 'Shakespearian Work', 'somewhat retarded by the advice of the Publishers & Booksellers not to issue it until the deluge of Xmas Books was over, & likewise by the great difficulties attending the attempt to secure an American copyright'. In his obituary in The Times, 6 July 1942, Williamson was praised as 'a highly industrious and versatile writer on art'.