I think you should contact Mark Cook. He lives in Dunnellon Florida and grows historic and species daylilies. He is as much of an expert on historic daylilies as anyone I know of.
Here is his website, and it has email contact info near the bottom.
http://members.tripod.com/biga...
If, for some reason, the address does not work, try contacting one of the Florida daylily clubs listed on this page. I am sure he is well known down there and someone would know how to contact him.
http://www.daylilies.org/AHSre...