There are 2 titles associated with this firm.

Browne, Mary A. Mont Blanc, and Other Poems. By Mary Ann Browne, in her fifteenth year. London: John Hatchard and Son [187 Piccadilly], W. Benning, Leonard Benton Seeley [Fleet Street], 1827.
Howitt, William, and Mary Howitt. The Desolation of Eyam: The Emigrant, A Tale of the American Woods: And Other Poems. By William and Mary Howitt. Authors of "the Forest Minstrel and Other Poems." London: William Curry, Jun. & Co., George Wightman and Cramp, Thomas Oliver and George Boyd [High Street], 1828.