I don’t know why Columbia reissued Gentlemen Prefer Blondes with a white border around the design. It must have looked more modern to them. The RCA Dukes of Dixieland is easier to speculate about. It was originally on Vik, an RCA secondary label. AFter this album they recorded for Audio Fidelity and were popular. RCA reissued the record in 1959 to cash in on that popularity. The font and the photo are reminiscent of their covers on AF. At the same time, the graphics fit in with RCA covers of the era. Intelligent capitalism on the part of RCA.