The tycoon is from Uncle Scrooge 23-06.
[idea Barks' daughter]
xref:W WDC 98-02;
xref:W OS 29-02;
This story is also reprinted in Walt Disney's Uncle Scrooge Adventures (Gladstone, 1987 series) #3 (January 1988) and in Carl Barks Library of Walt Disney's Comics and Stories in Color, The (Gladstone, 1992 series) #51 (March 1996).