The new work Varnhagen no Caleidoscópio [ Varnhagen in the Kaleidoscope ] was edited by Professors Lucia Maria Paschoal Guimarães and Raquel Glezer and published by the Miguel de Cervantes Foundation. It is a collection dedicated to the life and work of the historian Francisco Adolfo de Varnhagen (1816-1878), from the Memory of Knowledge [ Memória do Saber ] project, funded by the CNPq. In addition to the articles written by the organizers of the volume, there are other important contributions by Lucia Maria Bastos Pereira das Neves, Guilherme Pereira das Neves, Arno Wehling and Themistocles Cezar, in addition to some previously unpublished or little-known texts by the nineteenth-century historian.