Louis Ferdinand FERBER (1862-1909) aviator. Autograph manuscript signed, Rapport du Capitaine Ferber au sujet des dépenses à prévoir pour les aéroplanes, April 8, 1906; 2pages in-fol. Important document on aeroplanes by the pioneer of French aviation. First, the question of the engine: the Levavasseur engine can easily be tested, and compared with the competition: the Buchet factory has actively re-entered the ranks for the light engine, and will propose tests: "It will be time then, if one of the engines is worthwhile, to apply to the Minister for funds. In addition to the engine, there are the materials needed to make and repair aeroplanes. These materials include bamboo, steel wire, canvas or silk, aluminum, iron, steel tiles, etc. It seems that a sum of 1000 fr is sufficient for the year. But a new, very serious and important issue is about to arise. It's that of housing the aeroplanes". For the moment, they benefit from a temporary solution in a hanger, but lack space and freedom, and will be asked to leave when the Lebaudy arrives. In these conditions, the construction of a shelter of sufficient size to "house the equipment" is essential. He would like to "build a temporary hangar near the aerodrome, using the materials used by contractors: light shapes and bituminized cardboard. It seems that with a sum of 2,000 fr. it could be done [...]. We'd need a hangar measuring 15m by 15m and 5m high, to house the experimental aircraft in particular, while the train hangar would house those in reserve or under repair.