An inquiry of Sir Crisp Gascoyne, Knt., late lord mayor of the city of London, into the cases of Canning and Squires, with his motives, his whole conduct and its consequencs, together with the various incidents attending it : begun in the February sessions of His Mayoralty and continued down to the time of Canning's Tryal and Conviction : in a letter from that Gentleman to the Liverymen of London : in which are occasionally interspersed copies of the original letters, certificates, informations, and such other evidence as led to the discovery of the innocence of Squires, and the Imposture of Canning.