John Richardson’s insights into the great artists and collectors of the last century

Meanwhile, Ricard tries his hand at larceny while Blum's Judd masterpiece makes bank

This year’s Columbia University School of the Arts 2002 MFA Thesis Exhibition as zeitgeist for current trends

“Dealers must overcome the interior decorator mentality”

Sothebys.com will be operated by the auction giant

Dreesmann was a passionate and committed collector who barely ever sold on his beloved acquisitions

Museo del Territorio, Biella, Piedmont

A sample of the collector's princely taste

As other items become inaccessible to some collectors, many in the middle market have turned to textiles

This year has served as a good barometer of the Modern art market

Show demonstrates the aboriginal passion of an Austrian collector

Martin shares his love for modern and contemporary American art in new Las Vagas show, giving a personal touch via audio guide

The director of the world’s top modern and contemporary art fair prides himself on the new talent it has discovered

Reflecting the continuous rise in the value of art and importance of provenance

The most expensive private town house ever put up for sale in Britain

The Christie's estimate puts its worth over £3.5 million

Prices are rocketing, but perhaps not everything is right in this field with many experts questioning the authenticity of some pieces

Legal battle over Dr Gustav Rau’s paintings, which he wants to give to Unicef, and which are on loan to Paris

The market is driven by supply and demand and not by collectors’ taste, says veteran dealer in Asian art

A doctor in a remote village in the Congo, part of Dr Rau's thousand-strong collection is on display now in Paris.

And a wider range of stock attracts more collectors

Anger at appointment of collector who imports the very objects the committee tries to keep out

Christopher Ondaatje has only recently come to public notice with his donation of £2,750,000 to London’s National Portrait Gallery.

The couturier’s change to a minimalist lifestyle moved him to dispense with all his eighteenth-century furniture, his paintings, and decorative arts

These collectors agree that the market has risen so much as to make buying almost impossible

A compelling biography of the father and son who founded the Walters Art Gallery, Baltimore

It is fifty years since this collector and essentially American philanthropist was turned on to art while at Harvard. He has been an integral part of the art establishment in Chicago for decades

The president and executive director of Knoedler’s encourages collectors to become museum patrons and supplies major museums with works of art

Picasso for the blind at Wildenstein and a bevy of Latin American paintings exhibitions

An American financial market strategist has put together a major collection of nineteenth-century British watercolours.