-SG- I recently came across this posed and very grainy photo of Graham Walker and his passenger Tommy Mahon on their 1923 Sidecar TT Norton. Walker and Co. finished second, a couple of minutes behind Freddy Dixon, mounted on the 'banking sidecar' Douglas outfit. Walker himself devised the Hughes TT sidecar, which was widely and successfully used throughout the rest of the decade. Third place-man was George Tucker, with another 588cc outfit very like Walker's.
Fast forward to 1954 and Graham wrote an amusing recollection of the event, which I have scanned and (courtesy The Classic Motorcycle) attach. Although the photos are still grainy, the sideways view of Graham's outfit with the auxiliary fuel tank is interesting.