Surviving examples of argillite flutes are exceedingly rare outside of museum collections.
Drew, Leslie and Wilson, Douglas. Argillite: Art of the Haida. Vancouver: Hancock House Publishers, 1980, pg. 185
Sheehan, Carol. Pipes That Won’t Smoke, Coal That Won’t Burn. Calgary: The Glenbow Museum, 1981, pls. 46, 47 and 48