Featured Pages Ariba Ariba Supercharged 500cc DOHC Watercooled Four, 1928
Riva FourThree at a Squeeze Strange scooter/motorcycle contraption
Atlanta DuoDestined for Legend Road Tests of New Models
William Ernest Manning
1919 Directory lists them as Manning, William Ernest, 87 South End Road, Hampstead, London NW3 and as motorcycle manufacturers.