As I recall, Crimmins was at the Quarry Farm picnic in 2001.

He was an infrequent contributor to discussions on the Mark Twain Forum,
but one of my favorite posts from him was on Mark Twain's birthday,
November 30, 2001 -- regarding the Ken Burns documentary on Mark Twain.
From the Twain-L archives:

https://tinyurl.com/y6wezsab

Barb