Daylily (Hemerocallis 'Lucile Young')
McCalley is the hybridizer... 1974
I don't think I have heard of that hybridizer before... Anyone else?
If we don't come up with anything, you might try writing an actual snail mail letter to David Kirchhoff of Daylily World. They have a big website. They moved from Florida to Kentucky a few years back, but he grew up with daylilies and hybridizers in Florida. If anyone could tell you about the hybridizer it might be him.