Indian ? Two very nice black and white Indians. The one at the front is a ca. 1940 leaf spring Indian Chief, the one at the rear a later (ca. 1946-53) Indian Chief. The front one 1940-45, the rear one 1946-49 then they went telescopic forks
Harley WL? Plus ancien que la WL, c'est un modèle avec moteur Knucklehead "More ancient than WL, it is a model with motor Knucklehead"
"More ancient"? The knuckhead only predated the WL by one year. And the 36R was basically the same bike as the 37WL.