The book "On the Courts of Memory, 1858-1875; from contemporary letters" by L. de Hegermann-Lindencrone is a unique collection of letters reflecting the cultural, social and political life of Europe in the second half of the 19th century. This book contains letters that the author received from influential people of that time, which reveal the atmosphere of that period and tell about important events and phenomena. The reader will be able to better understand that time, the experiences and thoughts of the people of that period thanks to this valuable collection of letters. The book "On the Courts of Memory, 1858-1875; from contemporary letters" is an important source for researchers of the history and culture of the 19th century.