Guglielmo della Porta art links 

Hermitage Museum, Saint Petersburg, Russia
Boy Pulling out a Splinter

Louvre Museum Graphic Art Database, Paris (in French)  

Guglielmo della Porta at the Metropolitan Museum of Art, New York City  

Guglielmo della Porta at the National Gallery of Art, Washington D.C.
2 works by Guglielmo della Porta

Cleveland Museum of Art, Ohio

Courtauld Institute of Art, London, UK
4 works by or related to the artist

Drawings from the Biblioteca Ambrosiana, Milan

The Walters Art Museum, Maryland

 
National Art Databases and Museum Inventories:

Art Fund for UK Museums

 

Christie's Past Sale Archive   NEW!
(database goes as far back as 1991; images go about as far back as 1999)

Sotheby's Sold Lot Archive   NEW!
(database goes as far back as 1998; images where permitted by copyright go about as far back as 2001)

 

Guglielmo della Porta in the Web Gallery of Art  

Wikimedia Commons Image Database  

Additional Image Search Tools:   NEW!
(SafeSearch set to "strict"; go to Advanced Search (Flickr/Google) or Preferences (Bing) to change)

	Flickr: "Guglielmo della Porta"	All Images Image Use Allowed Commercial Use Allowed
	Google Images: "Guglielmo della Porta"	All Images Labeled for Reuse Labeled for Commercial Use
	Bing Images: "Guglielmo della Porta"

 
 

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.

Wikipedia, the "Open Content" Encyclopedia

Oxford Dictionary of Art (eNotes)