Okay, so, to bump this thread for all the best reasons....
I recently finished restoring a 1954 Drysdale sports-tourist bicycle.
It came to me as a complete bicycle but rebuilt with all modern components in 1976 or so (judging by the date on components such as the brakes). Beside the frame and fork, the only original thing was the build sheet, signed by Alvin hisself:
Which was enough to give me some idea what to do....
More to come a bit later... I just ran out of time to play on the internet.