"Index of the Project Gutenberg Works of Havelock Ellis" by Havelock Ellis is a comprehensive index of the works of a prominent early 20th-century British psychologist and social reformer. This publication not only encompasses volumes of studies on human sexuality, such as "Studies in the Psychology of Sex," but also includes essays related to war, social hygiene, and various cultural concerns. It serves as a catalog of Ellis's contributions in the fields of psychology and sociology during a time marked by progressive thought regarding sexuality and gender. The content of the index reflects Havelock Ellis's multifaceted exploration into human sexuality, social norms, and psychological insights. His seminal work, "Studies in the Psychology of Sex," is divided into six volumes that cover topics like sexual inversion, the sexual impulse in women, and the psychology behind erotic symbolism. Alongside this extensive series, Ellis addresses wider social issues such as prostitution, the mother's role in child upbringing, and the psychology of war, showcasing his belief in the intrinsic link between sexuality and societal well-being. By presenting a collection of his thoughts and findings, the index offers readers a structured view of Ellis's visionary ideas concerning the interplay of sex, society, and human psychology. (This is an automatically generated summary.)