The AHS has a complete hybridizer's list giving the names they use while registering ( sometimes the initials used are confusing) and where they are located.
This file is on the members only portal under Administrative Files ( updated in 2018) listing anyone who has ever registered a daylily. I'll add the link but am guessing that members will need to sign in before accessing this list.
https://cdn.ymaws.com/www.dayl...
