Karlo
 Facila Legolibro por la Lernado de Esperanto

by Edmond Privat

"Karlo" by Edmond Privat is a textbook first published in 1909. The work consists of twenty chapters that follow a young child's life from his birth through his marriage. Each chapter focuses on everyday life, school, and family, accompanied by exercises and comprehension questions. Originally published in Paris, this Esperanto learning text has become one of the most frequently reprinted books in the Esperanto language, spanning numerous editions across multiple countries and decades.