Barks and backgrund details?

[Mads Jensen]

Hi

Does anyone have concrete references for Barks' backgroundsdetalis in
comics, ie. like odd animals in the background, weird photos like
selfportraits on the wanted posters?
In US 51-01, he drew some odd animals, that are grazing.

If anybody could pin out, what period, Barks mainly did stuff like this, I
would be grateful. Like WDC 230-240's, or equal.

Thanks in advance

Regards,
Mads
--
Mads Jensen
http://www.ddfr.dk - Danish Donaldist Society