Acoustic Material Tables
Extensive table of acoustic properties, expanded from the late Alan Selfridge's 1985 paper.
http://www.ondacorp.com/tecref_acoustictable.html
Velocity of sound in some Biological Material
Ultrasound physics. Parameters. Differences between X-rays and ultrasound.( Gonzalo Diaz M. M.D.)
http://www.drgdiaz.com/tables.shtml#Velocity