Volume XXI.
I. Notes on the Social Organization and Customs of the Mandan, Hidatsa, and Crow Indians. By Robert H. Lowie. Pp. 1-99. 1917. Price, $1.00.
II. The Tobacco Society of the Crow Indians. By Robert H. Lowie. Pp. 101-200, and 13 text figures. 1920. Price, $1.25.
III. (In preparation.)
Volume XXII.
I. Contributions to the Archaeology of Mammoth Cave and Vicinity, Kentucky. By N. C. Nelson. Pp. 1-73, and 18 text figures. 1917. Price, $.75.
II. Chronology in Florida. By N. C. Nelson. Pp. 75-103, and 7 text figures. 1918. Price, $.25.
III. Archaeology of the Polar Eskimo. By Clark Wissler. Pp. 105-166, 33 text figures, and 1 map. 1918. Price, $.50.
IV. The Trenton Argillite Culture. By Leslie Spier. Pp. 167-226, and 11 text figures. 1918. Price, $.50.
V. (In preparation.)