...the trigonometrical parallaxes by their first method is * WS Adams, AH Joy, 0. Strombeig, and Cora 0. Burwell, " The Parallaxes of 1646 Stars derived by the Spectroscopic Method," Contributions from the Mount Wihon Observatory, No. 199, and Astruphys. J., 58, 1921. t RK Young and...