Penguin books delivery van, 1937

I didn't know there were such specialized vehicles.  Did they just distribute to shops and stores, or did this vehicle sell items to the public? (Someone across the pond may perhaps have an answer for us).

It would have carried books like these:

And, btw, from Wikipedia - the first ten books published by Penguin -

* Ariel: a Shelley Romance — André Maurois
* A Farewell to Arms — Ernest Hemingway
* Poet's Pub — Eric Linklater
* Madame Claire — Susan Ertz
* The Unpleasantness at the Bellona Club — Dorothy L. Sayers
* The Mysterious Affair at Styles — Agatha Christie
* Twenty-Five — Beverley Nichols
* William — E.H. Young
* Gone to Earth — Mary Webb
* Carnival — Compton Mackenzie

Photo credits:  Van - I Hate Music, via Libraryland.  Shelved books - Book Oasis, via Bugs Eat Books.