"Dear Picasso, where are my Harlequins?" is a captivating work by Anne Sinclair that illuminates the life and career of the Jewish art dealer Paul Rosenberg. As one of the most significant art dealers of the 20th century, Rosenberg maintained close relationships with renowned artists such as Picasso, Braque, and Léger. Sinclair utilizes the family archive and her own memories to create an authentic and touching portrait of this passionate art patron. The narrative is complemented by a 32-page color section that reflects the visual splendor of modern art and the tragic circumstances of the time. This book is not only a tribute to Rosenberg but also a poignant look at the impact of Nazi looting on the art world. It is an essential work for art lovers and history enthusiasts.