Harper & Row, early 1960s. On his Book Rarities blog, Keir Kramlich writes:
Aside from having wonderful and simple jacket design wrapping around from cover to cover, this edition is remarkable for having the artwork printed directly onto the hardcover. I’m guessing the logic behind this decision was that the publisher assumed these copies would be handled a lot more and wanted to prevent the dust jacket from eventually deteriorating.
Not that remarkable now, though – it’s common in the UK to see hardback/no dustjacket editions like this for common school set texts. (You’ll tend to see this for shorter classics that can be realistically studied by a class. Silas Marner or 1984, something like that.)