Francisco Collantes art links 

Hermitage Museum, Saint Petersburg, Russia
St John the Baptist in the Desert, 1629-30
Landscape with Ruins, ca.1634

Francisco Collantes at the Prado Museum, Madrid
Saint Onuphrius, ca.1645

 
National Art Databases and Museum Inventories:

Joconde Database of French Museum Collections (in French)  

 

Francisco Collantes in the Art Renewal Center

Francisco Collantes at CGFA  

Francisco Collantes in the Web Gallery of Art  

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)

Ciudad de la Pintura (in Spanish)  

State Hermitage Museum Unofficial Site   NEW!

 

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.