The Bell Airacuda and Bristol Blenheim are early ones.
Well, "early" is relative. You have things like Sikorsky's Ilya Muromets, which has to be one of the earliest examples of this configuration in a close cockpit bomber.
Many of the early bombers such as the Farmans had this layout. Going into the jet age, the Ar 234 is another classic example of this.
Many of the early Soviet jet bombers designed with the assistance of German engineers had this arrangement, too.
Cheers,
Logan