Rare Books London is a sprawling umbrella promotion of auctions, fairs, talks and tours that takes place here from May through June. The “jewel in the crown” of the event, according to its website, was the A.B.A. Rare Book Fair, whose 61st edition, featuring 175 British and international dealers, closed on Saturday. More than a third of the exhibitors were based outside Britain.

After 19 years at the Victorian-era Olympia exhibition center in West London, the three-day fair had moved to Battersea Evolution, a more up-to-date temporary venue on the south side of the River Thames. This latest incarnation of the A.B.A. fair was opened by David Attenborough, narrator of the BBC’s acclaimed “Life on Earth,” “The Living Planet” and “Blue Planet” natural history series.