Scope and Contents From the subsubseries: This subsubseries includes prints (both original and reproduction), handbills, and plates from publications, and is arranged chronologically by the date of the event or (in the case of portraits) of publication.Eighteenth-century events represented include the first hydrogen balloon ascent, Champ de Mars, Paris, August 27, 1783; the first three human balloon ascents (by François Pilatre de Rosier and François Laurent, Marquis d'Arlandes, from la Muette, November 21, 1783; by...