1860–1869
Pierre Louis Pierson, 1893
Pierre Louis Pierson, 1860
Pierre Louis Pierson, 1895
Pierre Louis Pierson, 1863
Pierre Louis Pierson, 1855
![[Countess de Castiglione]](https://images.metmuseum.org/CRDImages/ph/original/DP205242.jpg)
![[La Comtesse in Ermine Cape]](https://images.metmuseum.org/CRDImages/ph/original/DP235183.jpg)
![[Countess de Castiglione, from Série des Roses]](https://images.metmuseum.org/CRDImages/ph/original/DP205226.jpg)
![[Unknown Sitters]](https://images.metmuseum.org/CRDImages/ph/original/DP221439.jpg)
![[Countess de Castiglione]](https://images.metmuseum.org/CRDImages/ph/original/DP205251.jpg)