Glidden was the point man for the W2 stuff; Hamburger was primarily working Stock & SS, though there was 1 Duster (the Hamburger & Sweitzer car) that ran outside of that realm in B/SM.
I've tracked down all of the early Dusters except that one (distinguished by large (long) wheel openings) and one of the '74s, which was white and usually referred to as the Hall Of Fame car.
The rest were blue & white in that diagonal scheme.
I'm really curious about the car in FL !