Rival Boatmen changed in Carl Barks Library?

[Daniel van Eijmeren]

According to Michael Barrier's "Carl Barks and the Art of the Comic 
Book" (page 168), the title of Barks' WDC 45 story is "This Month's 
Thriller - Rival Boatmen". The reprint in The Carl Barks Library 
only contains "Rival Boatmen".

Has the text "This Month's Thriller" been dropped from the reprint?
If so, does someone have a scan of the original publication of the 
opening page?

--- Daniël