The D.O. Mills Expedition complete in 4 parts (all published). Comprising Pt I: Organization and History of the D.O. Mills Expedition to the Southern Hemisphere; Pt II: Introductory Account of the D.O. Mills Expedition;

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Pt III: Description of the Instruments and Methods of the D.O. Mills Expedition; Pt IV: Radial Velocities of 150 Stars South of Declination - 20ø. Sacramento 1907-1909. 4to. With illusts and graphs. (Univ. Calif. Publications of the Lick Observatory Vol. IX: Pts. 1-4). NOTE: Astronomcal Observations based at Cerro San Cristobal Santiago Chile.