Wikimedia Commons
Birch Boughs, Catskill Mountains
John William Casilear (1811–1893)
drawing in the National Gallery of Art (NGA 198346)
- Fecha1856
- Técnicagraphite
- Dimensiones36.35 × 27.31 cm
- Se expone enGalería Nacional de Arte
Washington D. C., Estados Unidos
![Banknote Studies [recto]](https://upload.wikimedia.org/wikipedia/commons/thumb/4/4b/John_William_Casilear%2C_Banknote_Studies_(recto)%2C_1840%2C_NGA_56960.jpg/500px-John_William_Casilear%2C_Banknote_Studies_(recto)%2C_1840%2C_NGA_56960.jpg)
_-_National_Gallery_of_Art_(Samuel_H._Kress_Foundation).jpg/500px-The_Emperor_Napoleon_in_His_Study_at_the_Tuileries%2C_by_Jacques-Louis_David_(1812)_-_National_Gallery_of_Art_(Samuel_H._Kress_Foundation).jpg)