Richest duck/man in the world

[Arthur de Wolf]

MARK:
> On the last page of the story, there are two references to
> Scrooge being "the richest man in the world"  only it looks like
> "man" was written in by someone else.  Did this originally say
> "richest duck"?  And if so, what was the reason for the change?

In my Dutch version of Lo$#11 it says "Richest duck in the world".
(Well, actually it says "Rijkste eend ter wereld")

--Arthur.