"imperialist" uncle scrooge

[George Kesidis]

Hello all,
A couple of years ago I used to read Harpers Mag. 
I remember reading that one of their contributors
(I think he's from South America) wrote a book about
the imperialist content in some Disney Comics, especially 
Uncle Scrooge. I thought it was a joke so I've forgotten 
the title of the book and author's name. 
Does anyone know if this book really exists?
George Kesidis