Farewell address spoken by Mrs. Siddons on leaving the stage, June 29, 1812 /
Twiss, Horace,1787-1849.
[London] : Bennett, printer, bookseller, and stationer, 12 Fetter-lane, London,
[1812]
"On the occasion of what amounted to her farewell to the stage, on 29 June 1812, his aunt Sarah Siddons recited an address which he had written for her" -  information from the Oxford Dictionary of National Biography online, from the entry for Horace Twiss.
First line reads: Who has not felt, how growing use endears.
In one column.
Siddons, Sarah, 1755-1831
Actresses