Brown Brothers 1939 catalogue uses 'large flange' for BH Airlite hubs
Brown Brothers 1952 catalogue uses 'small flange' and 'large flange' for Blumfield, Harden, Bayliss Wiley, BH Airlite, Chater Lea, Powell, Shellwin, Normandy hubs
1953 Simplex catalogue uses 'small flange' and 'large flange'
1955 Runwell catalogue uses 'small flange' and 'large flange'
Undated Harden Hubs catalogue uses 'small flange' and 'large flange'
Peter Brueggeman
La Jolla California USA
4peebee(at)peterbrueggeman.com