Trail of Cthulhu: Eternal Lies
This is a combination diary and sketchbook written by Douglas Henslowe in 1933. It details his memories of the 1924 Incident that he undertook with Walter Winston and the rest of the 1924 Investigators. It is written in a mad shorthand and jumbled stream-o-consciousness style that leaps about through time and space. It discusses the 1924 Incident at length – similar to what Henslowe sated in Joy Grove.
The pictures that he sketched are representative below:
The book does provide +1 Cthulhu Mythos pool to anyone who reads it.