Image: Kin-Boko Reed Flute #34
This flute is the artifact shown on plate 86, item 34 of [Kidder 1919]. This photo is from its current catalog as item 15-11-10/A2105
from the collection of the Peabody Museum of Archaeology and Ethnology, Harvard University, Boston.
See The Development of Flutes in North America for more context about this image.