I have not read it but per Wikipedia: “Ten Days That Shook the World (1919) is a book by the American journalist and socialist John Reed. Here, Reed presented a firsthand account of the 1917 Russian October Revolution. Reed followed many of the most prominent Bolsheviks closely during his time in Russia.”

Sounds very interesting. I always find first hand accounts fascinating as they give a perspective that is untainted (for better or worse) by the following historical examination and shows what people were thinking at the time. Thank for the recommendation!