Nope, I was wrong. It’s Christine Muhlbach on harp on the Orchestral Favorites recording.
My copy of the recording of Taka Kling and Louisville just says “The Louisville Orchestra, First Edition Recordings, Robert Whitney/Jorge Mester conducting”.
The outer sleeve appears to be a generic cover used for all the recordings in the series. There’s not even a mention of the actual album contents on it. The insert has the numbers LOU-701 and LS-701. The other pieces on it are “Ilinx” for Clarinet and orchestra by Antonio Taurello, and Concertino for Clarinet and Strings by Matyas Seiber, both with James Livingston as soloist.