WANTED - Veteran Douglas Parts

We have a client chasing some parts for his 1913 Douglas 2 3/4 HP as follows:

Wheel hub
Rear wheel belt rim
Front stirrup brake mechanism
Rear wheel brake mechanism
Gear box with clutch – I obtained the clutch pedal and there is a hole in the footboard so I assume this was original to my machine.
Bracket fitted below steering head for stirrup mounted headlamp.
Two early type barrels
Handlebars

He is located in England and can be contacted directly by email to corgiking@aol.com