"Hidden Barks"

[Arne Voigtmann]

Hi.
I don't know if this topic was dealed with before, but I just found a
hidden "Barks" in Don Rosa's "The Crocodile Collector" among with the
hieroglyphs in El Faijum (page 7 panel 5 of that story).
I only know of two other ones, the one in "The Sharpie of the
Culebra Cut" and the one where Barks can be seen on a "WANTED"-Poster
in the police office in "Cash Flow".
Does anybody (maybe Don himself) know about other "hidden Barks" in Don's stories?

Best regards,
Arne.