NADAR Félix Tournachon, dit (1820 - 1910)L.A.S. "Nadar", Paris October 2, 1870, to Paillard de Villeneuve of the Gazette des Tribunaux; 1 page in-4 headed République Française, Défense Nationale 18e Arrondt, Observations aérostatiques sous la direction des Citoyens Nadar-Dartois- Duruof, cachet in red ink République Française, 1 Aérostiers Nadar-Dartois-Duruof. Paris headquarters. [Nadar created a Compagnie d'aérostiers to set up airmail from the Butte Montmartre; this is one of the first flights to leave Paris]. "Please ask our friend P. de Villeneuve and his editorial team to send me their letters for outside Paris (in accordance with postal regulations) before tomorrow evening, as we have a departure from Fort Aerostat after 7 a.m. on Tuesday"...

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.