The question of the precedency of the peers of Ireland in England, fairly stated in a letter to an English lord - Egmont, John Perceval (Printed for J. Morgan, and C.G. Seyffert, 1761)
Goldsmiths'-Kress no. 09731. - Includes bibliographical references. - OCLC, 23479721. - Reproduction of original from Goldsmiths' Library, University of London. - Sometimes attributed to his father, the first Earl of Egmont--Cf. DNB