LR
Now that is interesting. I went back and had a good look and the upper wing structure seemed to possibly show a false spar and neutral ailerons. So perhaps not after all.
The absence of a forward elevator made me wonder if it just hadn't been fitted.
R E-P is also credited as the inventor of the control column.
Following the farcical "photo of the Whitehead machine in flight" interlude the Californians are now pushing for greater recognition of Montgomery ( whose glider was the probable actual subject of the "Whitehead " photo.)
He was gliding using ailerons in 1884 apparently .