Laocoön and His Sons
He copied paintings from old masters for the purposes of studying the paintings and the antique plaster sculptures which made a deep impression on him, such as the statue of "Laocoön and His Sons" (50 B.C.) ("Swedish": ""), at that time it was in the Royal Swedish Academy of Arts in Stockholm, and Rembrandt's "The Conspiracy of Claudius Civilis" or "Bataverna's allegiance" ("Swedish": "Batavernas trohetsed" (1662)). Rembrandt's oil painting "The Conspiracy of Claudius Civilis" has been in the ownership of the Royal Swedish Academy of Arts since 1798 and it has been deposited in the Nationalmuseum in Stockholm since 1864.