p 242 | Cockade : a badge on a hat; more pictures here.
p 243 | 1928 lithograph advertising Maitre Fleurs Naturelles, an important Parisian florist of the day.
p 244 | LACHAUME was -- and still is -- one of the important florists in Paris. Probably as expensive as Odette said... [
p 246 | Lohengrin is an opera by Richard Wagner (wiki). Here's a synopsis of Lohengrin at the Metropolitan Opera House website.