found: nuc86-53673: Warne's complete letter writer ... 1972 (hdg. on NN rept.: Warne (Frederick) and Company, ltd.; usage: F. Warne)
found: LC data base, 4/2/87 (hdg.: Warne (Frederick) and Company, ltd.; usage: F. Warne)
found: The Bartholomew-Warne atlas of Europe, 1974: t.p. (Frederick Warne, London) t.p. verso (Frederick Warne & Co Ltd, London)
notfound: Mary, Mary, quite contrary, 1870?: cover (Frederick Warne and Co.; London publishers and printers c. 1800-1870, 1982: (Warne (Frederick) & Co., 15 Bedford Street, Covent Garden)