I've become quite fond of early Esterbrook dip pen boxes for their artwork and sheer beauty.  Here are some that I've come across recently.  The first boxes made by Esterbrook only state the Philadelphia address, later boxes integrated the John St., NY address and finally Camden, NJ.

This is one of the earliest boxes made as it only shows the Philadelphia marking on it.  The Caution note on the back of the box has different wording than others I've seen.

This is similar to the blue box above, but also lists the New York address on the back of the box.  Still no reference to Camden NJ yet.