Author and civil rights activist believed that art “broadened" a person's perspective of the world

London auction house will also sell photographs of famous musicians from Elvis to Mick Jagger and Madonna

Auction of works owned by tycoon, who went to prison for price-fixing scandal, may be the most valuable private collection ever to hit the block

Koller, Zurich, Italian Manuscript Illuminations, 18 September

Swann Galleries, New York, the Art Collection of Maya Angelou, 15 September

Bonhams, London, the South African Sale, 9 September

New chief executive blames late sale schedule, exchange rates losses and painting that failed to sell above pre-sale estimate

Record sales in New York boost the market, while anti-corruption crackdown hampers Asian buyers, Artprice report reveals

Falls in private sales, Russian art and London auctions dent otherwise strong performance; Sotheby's sales also flat

Asian buyers were active, but Russians largely absent in a week of mixed results at Sotheby's, Christie's and Bonhams

Complex system of guarantees behind sale of key works including $81.9m Rothko

Sotheby’s makes highest total ever, while records are set for YBAs at Christie’s

Opposition from heritage groups changes the embattled foundation’s plans

Whether a new concept or just another way to sell art, themed shows are bringing in business

Alfred Beit Foundation calls halt on auction of Old Masters after "proposal from private Irish donors"

Impressionist and Modern art auctions were in line with expectations

Auction house is contributing towards the artist’s production costs

Works by Rubens and Guardi are due to be auctioned in July to pay for upkeep of country home

Wooden sculpture that inspired Cubism fetches €5.5m in Paris

Around 2,500 works have been offered to cover company's debts