I. CAVE EXPLORATIONS IN THE OZARK REGION OF CENTRAL MISSOURI II. CAVE EXPLORATIONS IN OTHER STATES III. EXPLORATIONS ALONG THE MISSOURI RIVER BLUFFS IN KANSAS AND NEBRASKA IV. ABORIGINAL HOUSE MOUNDS V. ARCHEOLOGICAL WORK IN HAWAII SMITHSONIAN INSTITUTION, BUREAU OF AMERICAN ETHNOLOGY, _Washington, D.C., February 17, 1920._…
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