[Amsterdam maps and plans] Amsterdam, collection of 14 plans of the city, 1919-2008 Var. sizes. Comprises Hameleers II, 305 (17th ed., 1920), 342 (1st and 5th or 13th edition, 1919 and 1931 or 1932), 359 (5th ed., 1932), 370 (3rd ed. 1936), 398 (present in 6 eds., 1955-2008), 435 (only ed., 1981, the first "Fietskaart" of the city), 437 (15th ed., 2007) and 441 (7th ed., 2008). (total 14)

Composed of several subsidiaries, the Drouot Group is a major player in the art market. Hôtel Drouot, located in the heart of Paris, has been the world's largest public auction center since 1852. 15 salerooms are available to more than 70 auction houses. The emulation generated by an annual offer of 230,000 artworks from 21 major specialities - from Antiquity to street art - attracts some 3,000 visitors every day. The Group's digital platform, Drouot.com, offers digital sales - Live auctions (live broadcasting and participation in auctions), Online-only auctions (dematerialised auctions) and Buy Now sales (sales of lots at fixed prices). Nearly 2 million items are offered annually by 600 auction houses. Auction news is reported every week in La Gazette Drouot, the leading weekly magazine for the art market and culture published by Auctionspress.