Marquis Who's Who is a biographical directory that highlights the achievements of notable individuals across various fields, including business, science, arts, and politics. Established in 1899, it serves as a comprehensive resource for researchers, historians, and anyone interested in learning about influential figures. The directory publishes annual editions that feature profiles of individuals who have made significant contributions to society. Each entry typically includes a person's education, career highlights, and notable accomplishments, making it a valuable tool for networking and recognition in professional circles.