Jean-Jacques Manget, in his 1721 book "Treatise on the Plague", written just after the Great Plague of Marseille, talks about the costumes that plague doctors wore at Nijmegen in 1636-1637. A picture of the costume is at the front of the book. The plague doctors of Nijmegen also wore beaked masks. Their robes, leggings, hats, and gloves were made of morocco leather.