In mathematics, Theory of Lie groups is a series of books on Lie groups by ClaudeChevalley(1946, 1951, 1955). The first in the series was one of the earliest books on Lie groups to treat them from the global point of view, and for many years was the standard text on Lie groups. The second and third volumes, on algebraic groups and Lie algebras, were written in French, and later reprinted bound together as one volume. Apparently further volumes were planned but not published, though his lectures (Chevalley 2005) on the classification of semisimple algebraic groups could be considered as a continuation of the series.
Chevalley, Claude (1951), Théorie des groupes de Lie. Tome II. Groupes algébriques, Actualités Sci. Ind., vol.1152, Hermann & Cie., Paris, MR0051242
Chevalley, Claude (1955), Théorie des groupes de Lie. Tome III. Théorèmes généraux sur les algèbres de Lie, Actualités Sci. Ind., vol.1226, Hermann & Cie, Paris, MR0068552
Chevalley, Claude (1968), Théorie des groupes de Lie: Groupes algébriques, théorèmes généraux sur les algèbres de Lie (in French), vol.8, Paris: Hermann, Reprint of volumes II and III bound as one volume