Engravings from the mid 19th century or two of John Gibson's works. The Tinted Venus is is for sale on Ebay. Cupid and Psyche is also for sale on Ebay.
Wikipedia article on John Gibson. Material by John Gibson is included in The proportions of the human figure, as handed down to us by Vitruvius by Joseph Bonomi.
Another post about John Gibson, John Gibson Hylas Abducted by Nymphs.
Google books edition.