1865–1874
Mayer & Pierson, 1856
Mayer & Pierson, 1869
Mayer & Pierson, 1865
Mayer & Pierson, 1859
Mayer & Pierson, 1861
Mayer & Pierson, 1858
Mayer & Pierson, 1855
![[Unidentified woman standing]](https://media.getty.edu/iiif/image/c5040823-55c8-4d2d-8c78-642258a57974/full/843,/0/default.jpg)
![P[rin]ce Gerome](https://media.getty.edu/iiif/image/c864a30b-f34c-442c-a242-8fa4ed39766c/full/843,/0/default.jpg)
![[Unidentified French statesman with a Vandyke beard, seated]](https://media.getty.edu/iiif/image/d319673c-534f-40c5-aecd-8d1a5d52f802/full/843,/0/default.jpg)
![Congres de Paris. Photographies de Mayer Fres. & Pierson, Photographes de S.M. L'Empereur. (cover title) [Portraits]](https://media.getty.edu/iiif/image/ec8c5d9f-42a3-47d5-8fd7-18b9eded5839/full/843,/0/default.jpg)
![[Empress Eugenie of France]](https://media.getty.edu/iiif/image/3e75901c-baa3-4e90-b68a-f67dd4a77596/full/843,/0/default.jpg)
![Cte [Camillo Benso di] Cavour (1810 - 1861)](https://media.getty.edu/iiif/image/78d482de-54cb-4f01-b222-f61f9d782362/full/843,/0/default.jpg)
![[Portrait of Alexander, Count Hübner]](https://media.getty.edu/iiif/image/f6fc151c-f9ea-4440-afee-b8bbfbe5824a/full/843,/0/default.jpg)
![P[rin]ce de la Moskawa](https://media.getty.edu/iiif/image/055d4c8c-c93e-4656-b62e-ef56f2db1eac/full/843,/0/default.jpg)