Above you can read a fascinating short article about autographic techniques in book illustration by Nigel Lambourne (1919-1988) an excellent draughtsman Nigel Lambourne was an illustrator and printmaker who trained at the RCA. By "Autographic" here he means illustrations that are directly printed into the publication rather than being photographically reproduced and then printed.
I may feature Nigel Lambourne as another "forgotten" illustrator shortly.
The final illustration is a frontispiece and is a reference to the last phrase in the article and is by John Lawrence a nice two colour print from a plastic "plate".