Don't think any visible depth of field is appropriate, at least i don't remember it from the originals (i could be wrong).
The original shot was probably set up with a dolly over a table with the text using a specialized tilt/shift lens, by tilting the lens they would be able to tilt the plane of focus to run parallel with the table surface, ensuring sharp focus across the whole text.
This is called the Scheimpflug principle:
http://en.wikipedia.org/wiki/Scheimpflug_principle
Or at least, that's how i would have done it.