The book "Samuel F. B. Morse. His letters and diaries. In two volumes. Volume II" tells about the life and activities of the outstanding American inventor and artist Samuel Finley Breeze Morse. In the second volume, readers will have the opportunity to delve into Morse's inner world through his personal letters and diaries. Autobiographical records, in which he shares his thoughts, experiences and impressions, will help to better understand him as a scientist, artist and public figure. The book is a valuable source for anyone interested in the history of science and technology, art and culture of the 19th century.