On his Homepage:
Siegfried Linkwitz (1935-2018).

A warm hearted freethinker, pioneer, innovator and friend passed away. Itīs sad..... Frank Brenner

"Celebration of Life" for Siegfried Linkwitz, Sunday October 14, 1:30PM - 4:00PM, at the Mill Valley Community Center ,180 Camino Alto, in Mill Valley, 8 miles north of the Golden Gate Bridge. Everyone is welcome!.