Many thanks to one of my readers who was able to help solve the mystery of who  Alcazar d’Ete was.  It was the name of a former Parisian Music Hall that was taken over during the war by the American Fund for French Wounded. There is a link pasted below that includes a wonderful photo from New York Times, March 1917 illustrating the type of boxes that were sent to Norman which she described receiving in her last letter of 7th February 1918.

http://memory.loc.gov/master/sgp/sgpprod/sgpnytr/1917/191703/19170318/0011.pdf