Souvenir program for a concert by Parc Aeronaitique 402 at 9pm…

Souvenir program for a concert by Parc Aeronaitique 402 at 9pm on Jul 26 1917 https://t.co/XrVPvSdHma https://t.co/hxx6Kqtkct http://twitter.com/ThisDayInWWI/status/889987922018959361