Created July 30th, 2017 they are now 383 members strong. CS&CSS member Brian McInturff is the creator and Admin since its inception. A private Facebook group, so you must apply for membership. An incredible resource of images and information, with many collectors ready to answer your Christmas Seal questions. I feel like I have dropped the ball, and should have known about this group and reported on it much earlier.
Their mission:
For the discussion of all types of Christmas Seals. Locals, U.S., Foreign, Private, and Red Cross. Not only the seals but anything from paraphernalia to ephemera including posters, displays, pins, toys, flyers, etc.
Hoping to further the advancement of Christmas Seal collecting and the Christmas Seal and Charity Stamp Society.
https://www.facebook.com/groups/376276439454627