https://www.tall.org
Yes, the very first Tall Club was formed in...Los Angeles in 1938.
Los Angeles, California
Club Name: California Tip Toppers –“Earth’s first Tall Club!”
When you join a TCI affiliate Tall Club, you are automatically a member of Tall Clubs International, and therefore invited to attend various “TCI Weekends” throughout the year, and in many parts of the continent. This year the annual convention is in Dunedin, FL sponsored by the Tall'phins.
Focus: Awareness of height issues
There are Tall groups around the world.
On their website, the current issue is one I sympathize with: Can Airline Seating Get Any Worse?
They also spotlight the first "Tall Movie": The 2019 Netflix movie Tall Girl has a scene of parents hosting a meeting of the Tall group in their home for the benefit of their daughter, the titular tall girl.
I could belong to one as I am 6'5"
! Although why haven't I heard of this group until...NOW?