Long Gone Airstrips Uk

[Martinburney]

Hi

I am trying to trace the exact locations of 3 Airstrips reported in The Aeroplane Directory 1937.

CANON BRIDGE HEREFORDSHIRE
Possibly used by the aviator Davis 1920's/1930's

DOLBELIDR ST ASAPH CLYWD
Used by Gipsy Moth G-ADFC owned by R K L S Mainwaring

TRYSULL NOW WEST MIDLANDS
Used by J B Hall & L W Hamp

Any help would be appreciated.

Regards Martin Burney