Beneath the lower right corner of the engraving the text reads "Engraved on Steel by C. Heath"
The publisher who first recognized the aesthetic and economic advantages of steel engraving was Longman, who issued twenty books containing, all together, around seventy steel engravings beginning in 1821. Longman's first production using steel engravings was the edition of Thomas Campbell's The Pleasures of Hope issued by Longman on January 10, 1821. Charles Heath's four engraved illustrations for this work, including its engraved title page, were dated 1820. According to Longman's ledgers, 3000 copies of this edition were printed, and in November 1824 a further 3000 copies were printed from the same plates, reflecting the extreme durability of steel engravings compared to engravings from copperplates. There was also a printing dated 1822, as I have a copy in my collection bearing that date.
