Some people responsible for the Great Western Shakuhachi Transmission

Listed alphabetically by family name:
Elizabeth Reian Bennet
Christopher Yohmei Blasdel
Mary Lu Brandwein
Dr. Kiku Day
Tom Deaver
Brian Franklin
Jim Franklin
Philip Gelb
Michael Chikuzen Gould
Peter Hill
Phil Nyokai James
Bruce Jones (Shakuhachi Mailing List)
Kurahashi Yodo
Kurahashi Yoshio (Yodo II)
Ken Mujitsu LaCosse
Steve Lacy (Jazz soprano saxophonist/student of Watazumi)
Patricia Lee
Dr. Riley Lee
Monty Levenson and family
Andrew MacGregor
Masayuki Koga
Dan E. Mayers (International Shakuhachi Society)
Mejiro Co. online (Saori)
Ron Nelson (International Shakuhachi Society)
John Kaizan Neptune
Alcvin Takegawa Ramos
Stan Kakudo Richardson
Brian Tairaku Ritchie
Sakai Shodo
Ralph Samuelson
James Nyoraku Schlefer
Ronnie Nyogetsu Reishin Seldin
Bill Shozan Shultz
John Singer
Sogawa Kinya
Barry Nyosui Weiss
David Wheeler
Yamaguchi Goro
Yokoyama Katsuya
Yoshida Seifu
Yoshizawa Masakazu
Perry Yung

All of the administrators, moderators and participants at shakuhachiforum.com

... and, of course, many others.