Wikimedia Commons
The Artist's Brother-in-Law, Ludwig Hassenpflug, Preparing to Play the Piano
Ludwig Emil Grimm (1790–1863)
drawing in the National Gallery of Art (NGA 139890)
- Date1826
- Techniquegraphite
- Dimensions25.2 × 21.2 cm
- Exposée àNational Gallery of Art
Washington, États-Unis
_-_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)