Blake's Six

Does anyone know who illustrated these covers? They're signed "Blake" but interweb research has drawn a big fat nothing, or rather, nothing but a slightly stoat William and the fact that he did a bit of illustration too just doesn't help, even though he was well dead by the time Esso commissioned these.

Comments

[Sketchee]

I don't know either, but they do look pretty cool. Thanks for posting!

[Jon Hicks]

Gorgeous artwork - the London cover is particularly atmospheric.

Did they have a date on them?

[Richard]

Late 40s Jon. Can't be more specific right now but I know that by 1950 Esso maps had a red bar at the top.

[Daniel]

Northern England, population: 1.

[Jon]

I bought a load of these maps from a charity shop about six months ago. One of them has a hinged strip attached to it so you can see how far places are from a certain point.