With the link below you can go to the daylily data base.
Under hybridizer type in Simon.
https://garden.org/plants/grou...
There are 67 daylilies. Unfortunately most do not have pictures. Here are some clues to use. A lot of them have peoples names. Maybe those people were given those daylilies and they have pictures. If you have a yellow daylily besides putting in Simon then go to color description and type yellow. That can limit the field.
Also, for the ones that have pictures here are some examples to use
If you actually click on the flower you will get information on the picture.
It shows who actually had these daylilies to sell. Maybe they sell other Simon's or would have pictures of other cultivars.
And very important...in what ever region Simon did her hybridizing work, I bet she belonged to AHS...American Hemerocallis Society. You might find someone locally who is familiar with her daylilies.
May you be blessed with success and beautiful flowers!