
In a letter to his friend Peiresc, Dec. 1634 - LPPR, 393; as quoted by Simon Schrama, in Rembrandt's eyes, Alfred A. Knopf - Borzoi Books, New York 1999, p. 403
At a speed which was daunting even for someone of his facility, Rubens was asked to supply the designs for four stages and five triumphal arches in the city Antwerp. Though he could rely on his scholarly friends for help with the allegorical program and his workshop for assistance in fabricating them, he still became 'overburdened' with the work
1625 - 1640