Barks's Beagle Boys spelling

[Daniel van Eijmeren]

COA spells "The Beagle Boys".
http://coa.inducks.org/coa/c1/character.php/0/BB

In Barks's 'House of Haunts' (US 63), 'Heedless Horseman' (US 65), 
and 'The Doom Diamond' (US 70) their shirts spell "Beagle Boys Inc."

In their first appearance (WDC 143), their shirts spell "Beagle Boys".

According to a transcription of a February 25, 1976 Barks letter to 
Marty and Elouise Martin, published in Geoffrey Blum article "Letters 
>From the Duck Man Part Eighteen: All Good Things", published in The 
Carl Barks Library of Walt Disney's Comics and Stories in Color album 
No. 45, (gasp!), Barks spells "the Beagle Boys".

Where does the spelling of "The Beagle Boys" originate from?

I haven't taken a look at other Barks stories. I'm having sleepless 
nights of my reports of getting lost in The Carl Barks Library, every 
time I open it. Just for that I'm going to throw the whole thing out 
of the window! :-)

--- Daniël

"Let's get away from here, mates!"