Hello Maxwell,
- If you want to see planes then go to the Musée de l'Air et de l'Espace at Le Bourget Airport (20 mn from Paris, to the North East) Take bus 152 from Porte de La Villette bus station, or bus 350 from Gare de l'Est, Gare du Nord or Porte de La Chapelle bus stations. The collection of pre-WW1 and WW1 planes is fantastic ! (including the original and famous Spad VII n°S 254 of
Georges Guynemer). Open daily except Monday if I remember well, from 10 AM to 5 PM.
- If you want to see documents, then go to the Service Historique de l'Armée de l'Air (SHAA) in the Château de Vincennes (East of Paris). Take bus 46 or 56 to bus station Château de Vincennes, or subway line n°1 to Château de Vincennes metro station (end of this line). At the ground floor are the books and files (open dayly except Saturday and Sunday from 9 AM to 5 PM), at the first floor the prints (open Monday and Tuesday morning, wenesday and thursday evening).
Hope you'll enjoy your trip !
Christophe