I wonder if some of the old UK papers are available like this?
CougarGA7 posts archived articles from British papers from time to time. The archives are online. Microfiche of U.K. papers may be available at some U.S. library somewhere. I have only looked locally.
R.A.F. 'raids' on France - Jul 26, 1939
A total of 243 planes, comprising five different types, and crews totalling 1,200 men, were engaged.
Distances covered ranged from 800 to 1,600 miles non-stop at speeds up to 300 m.p.h. The total distance travelled by all machines was equivalent to 10 times round the world.
The routes taken covered such widely separated areas as Paris, Lyons, Bordeaux and Marseilles. (Click Link for More)