Leon Cogniet art links 

Fine Arts Museums of San Francisco
La Déesse de beaux arts, 1826
L'Attention (Madame Cogniet et sa fille)

Louvre Museum Database, Paris
2 paintings and 36 drawings

Louvre Museum Graphic Art Database, Paris (in French)   NEW!  
Many works on paper online

Réunion des Musées Nationaux, France (in French)  
4 works online

Bilbao Fine Arts Museum, Spain   NEW!
Sketch for The National Guard of Paris leaving to join the Army in 1792

Bowdoin College Museum of Art, Maine (Zoomable)
The Abduction of Rebecca by Brian de Bois-Guilbert, ca.1828

Cleveland Museum of Art, Ohio

Harvard University Art Museums, Massachusetts   NEW!

Musée des Beaux-Arts de Bordeaux, France (in French)  

Musée des Beaux-Arts de Rennes, France (in French)  
(If the image is not clickable, click "Agrandir l'image" to enlarge the image)

Musee Magnin, Dijon, France   NEW!

Museum Collection Database for the Region of Haute-Normandie, France   NEW!

Palazzo Rosso Gallery, Genoa, Italy
Ritratto di Maria Brignole Sale

The Wallace Collection, London, UK

 
National Art Databases and Museum Inventories:

Joconde Database of French Museum Collections (in French)  

 

Leon Cogniet in the Art Renewal Center

Leon Cogniet at The Athenaeum  

Wikimedia Commons Image Database  

World Visit Guide (formerly Insecula)

Bildindex der Kunst und Architektur (in German)  
(a welcome screen is displayed for a couple of seconds before the search results appear)

Scancoo
The Egyptian Expedition Under the Command of Bonaparte

 

Grove Dictionary of Art Online (excerpt)  

Union List of Artist Names (Getty Museum)  
Reference sheet with basic information about the artist and pointers to other references.