Art Sales Research 

Auction Indexes by individual Auction Houses

Bonhams.
Founded in 1793 Bonhams today is active in over 70 categories embracing the entire spectrum of fine art, antiques and collectibles. Today, Bonhams conducts over 700 sales a year, more than any of its rivals worldwide.

Christie's
Founded in 1766, Christie's conducts international auctions in over 80 categories-from fine art and furniture to clocks and classic cars. Its auction houses are found across the globe.

Doyle Galleries
Founded in 1963, Concentrating on fine art, jewelry, furniture, decorations and a variety of other categories. New York City.

Drouot Galleries
Some 50 auction house consisting of 2,000 auction sales of approximately two million items take place annually.

Sotheby's
The data from the largest auction house, $2B annually.  Two separate databases, one for current and one for retrospective.  Includes images.

Swann Auction Galleries
founded in 1941. Specialists in rare books, photographs, African-American art, posters, and prints & drawings.