1855
Langenheim Brothers [Frederick and William Langenheim], 1854
Langenheim Brothers [Frederick and William Langenheim], 1860
Langenheim Brothers [Frederick and William Langenheim], 1845
Langenheim Brothers [Frederick and William Langenheim], 1849
Langenheim Brothers [Frederick and William Langenheim], 1856
Langenheim Brothers [Frederick and William Langenheim], 1850
Langenheim Brothers [Frederick and William Langenheim], 1858
![[The General Post Office at Washington]](https://media.getty.edu/iiif/image/66cb46cf-9b37-44e7-91e8-fee1b6b5a5fd/full/843,/0/default.jpg)
![[Portrait of an Unidentified Seated Man]](https://media.getty.edu/iiif/image/db494b19-d3d6-40a6-99c0-24e9c025c30a/full/843,/0/default.jpg)
![General View from American Side. [Niagara Falls]](https://media.getty.edu/iiif/image/1ce1938c-7811-4a5b-9b0b-95d2e6633d4a/full/843,/0/default.jpg)
![Frederick Graff's Monument at Fairmount [Philadelphia]](https://media.getty.edu/iiif/image/4e163afb-2118-4099-b09e-36526ba58d5f/full/843,/0/default.jpg)
![[Portrait of Two Seated Men]](https://media.getty.edu/iiif/image/8e4dc9e6-6dde-4ad5-98e7-17c61f39aba3/full/843,/0/default.jpg)
