John Hayls Works Online
Categorized & Annotated
Paintings in Museums and Public Art Galleries Worldwide:
National Portrait Gallery, London, UKArt Market:
Statens Museum for Kunst (National Gallery of Denmark), Copenhagen
Click "English" at the top right to switch the default language, then click "Search"
Tate Gallery, London, UK
(e.g. records of past sales at auction; sites providing examples of the artist's signature)
Sotheby's Sold Lot Archive NEW!Pictures from Image Archives:
(database goes as far back as 1998; images where permitted by copyright go about as far back as 2001)
Additional Image Search Tools: NEW!Articles and Reference Sites:
(SafeSearch set to "strict"; go to Advanced Search (Flickr/Google) or Preferences (Bing) to change)
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.