[NiLuJe]

@heeby: There's a quick way to check, but I have no idea how that works on the K4, since it lacks a keyboard:

Home screen, sorted by Authors, Go To > G [or just type G on older devices], that should jump to the page with authors whose last names begin with a G.

And as a picture's worth a thousand words, an example (showing that it even works with multiple authors):

(That's a screenshot of an individual book convert setting page, but you probably want to set it globally, in the Preferences).