Joe, I think this is what you are looking for; this and more appears on this page above:
Lilies do not bloom more than once per season, but you can remove the faded flowers so that the plants don’t waste energy making seeds.
After the lily blooms, you can also remove just the stem itself. However, do NOT remove leaves until they have died down and turned brown in fall. It’s very important not to cut back the leaves until the end of their season because hey help provide nourishment to the bulb for next season’s blooms.
Cut down the dead stalks in the late fall or early spring.
Joe, I think this is what you are looking for; this and more appears on this page above: