found: Work cat.: 2014568486: Rosenblum, M. Yonah's dream, 2008:preliminary page (bamboo marimba)
found: HarryPartch.com, Aug. 4, 2016(His instruments. Bamboo marimba; commonly called boo, consists of 64 segments of bamboo; two models; bamboo marimba I: each piece is closed on one end with a tuned tongue cut in the open end; bamboo marimba II: uses the same tuning as Boo I, but is made entirely from mottled Japanese bamboo, and each segment is open on both ends)
found: Corporeal.com WWW site, Jan. 5, 2016:(Boo (bamboo marimba): built 1955-1956; Played with felted sticks and small mallets on the edges of the tongues)