The hay-loft plot of Thistlewood and his 24 conspirators at 8 o'clock in Cato Street Edgeware Road London : to Massacre the Cabinet Ministers of King George the 4th at the Earl of Harrowby's Dinner Grosvenor Square 23d Feby 1820

"The entry of the Bow Street officers into the loft is realistically depicted, the conspirators having letters, the police and objects numbers, referring to notes below the title. Thistlewood stabs one police officer (2), and fires a pistol at another, saying, "Extinguish the lights!" Another Bow Street man (1) fires, saying, "We are Peace Officers lay down your arms"; a third supports the victim, who dies, saying, "Oh God! I am ..." A fourth comes up the stair. Six men collect behind a carpenter's bench on which are their weapons; a black man stands with sword and pistol behind Thistlewood; three men are seen in an inner room. A conspirator ('M') climbs on a carpenter's chest to escape from a high window (right), another raises a sash to escape on the left. All wear top-hats. Pikes, musket, &c., are on the ground. The notes: 'A Arthur Thistlewood, formerly Lieutenant in the Lincoln Militia. B W. Davidson Cabinet Maker, a Man of Colour. C, Rd Tidd, Boot Maker. D, Rd Bradburn, Carpenter. E, J. Gilchrist, Shoemaker. F, Chs Cooper, Bootmaker. G, John Monument, Shoemaker. H, Thos Preston. I, Thos Brunt. K, Paling [Palen]. [L,] Jass Ings, Butcher, guarded below M, Wm Jas Wilson, Tailor, Shaw, Carpenter, Harrison, Strange, Hall. - Bow Street Police Officers, 1 Ruthven. 2 Smithers stabbed. 3 Ellis. 4 Sermon. 5 Carpenter's Tool Chest. 6 Carpenters Bench. 7 Straw cutting Machine. 9 an Empty Cask. 10 a Hammock. 11 and 12 Sacks for Window blinds. 13 Trap door from Stable. 14 small room. 15 Two Shot holes. 16 Small room by the back window of which several of the Radicals escaped. 17 Grenades. 18 The Loft 15 feet by 12."--British Museum online catalogue