This is a project for an illustration for the de-luxe edition of Marmontel's Les Incas ou la destruction du Pérou written in 1777 and published by Firmin-Didot in 1819. A drawing of the same series of Amazali slaying a Spaniard was exhibited at the Yale Center for British Art in 1991, P. Noon, Richard Parkes Bonington, On the Pleasure of Painting, New Haven, no. 136, illustrated. None of the drawings for the series were engraved.
Colin was a student of Girodet and met in his master's studio at the Ecole des Beaux-Arts Géricault, Delacroix, Corot and Bonington. He remained a faithful friend of the latter.