About the book: 1965 / This book will talk about the pseudonyms of V.I. Lenin in the broad sense of the word, that is, not only about his literary pseudonyms, but also about party nicknames, secret surnames and even playful nicknames. The author does not claim to be categorical in his judgments, to provide a complete and exhaustive solution to the question of the origin and history of this or that another Leninist pseudonym. These notes represent only searches, and in some cases, guesses and assumptions. In general, the topic still awaits in-depth research.