Catherine E. King's book reviewed

Will public art by Koons, Rauschenberg, Tinguely and Haring humanise this vast complex by Renzo Piano?

The story of the Regency dilettante, eccentric and collector is told in all its scandalous detail

Over twenty-five years this Anglo-American has built up a great library of early books, manuscripts and incunabula

Computer-glitch software, Norton Utilities, has made the fortunes of Peter and Eileen Norton

“Lucian Freud: Some New Paintings” is on show until 26 July

The recent, widely publicised dispute over the provenance of two paintings by Egon Schiele, withdrawn last year from a loan exhibition at New York’s Museum of Modern Art on the grounds of contested ownership, offered a vivid illustration of the problems facing museums and private collectors who may find themselves having to prove good title to their possessions

Magnificent Man Rays turn out to be too good to be true, throwing doubt over other collections of his work

Unsurprisingly, most of these collections strongly represent the art of their own country

Golf is the new passion of millionaire who has sold Impressionists and French decorative art to the tune of $91.48 million since 1989

Former mutual-fund manager pits his taste against the market

Museums and collectors should hasten to protect their rights in this field

Inspired by the Tate’s plans for Bankside, she gave the museum one third of her massive collection of modern art

The donation will strengthen the museum’s holdings with major paintings by Americans such as Philip Guston, Leon Golub, Richard Diebenkorn and Willem de Kooning

The old favourites - Italian views and Dutch landscapes - make record-breaking totals

A round-up of some recent books on porcelain, pottery and delftware

Photographer and film director Yonfan has given eight Chinese paintings to the Musée Guimet in Paris

100 to be sold, including Thomas Cromwell from the studio of Hans Holbein

Kimbell Art Museum in Fort Worth gets twenty-six works from the blue-chip Staechelin collection on a three-year loan

The birth of American collecting: Frick, Mellon and Carnegie analysed

Baroque paintings given to National Gallery of Ireland instead

A book on the social and monetary value of art and how big businessmen became big collectors

One of Europe’s greatest private collections of medieval material and works of art from antiquity to the twentieth century is now on view in Ireland

Talley Dunn of Gerald Peters Gallery states with pride that “The art community as a whole is growing”

Eugene Victor Thaw on the transformation of tribal art

The multi-millionnaire has family connections with a Chinese, State-run armaments company

Commercial galleries with common goals banding together

The secret behind Sotheby’s contemporary art sale in New York, 6 May.

The shopping-mall millionare has been wooed by museums all over the world, but Dallas looks set to benefit from generosity in the great American tradition

David Tang mixes modern Chinese art with the smartest, retro-style club in Hong Kong and his own frantic life-style