Arrival: Slender The

: Found on a shelf in the entrance hallway of Kate's house.

(Charlie’s father) went into a deep depression after his son's abduction, eventually leading to the arson of his home. Slender The Arrival

: Located on a box inside the cave before the final radio tower sequence. Significance of These Papers : Found on a shelf in the entrance hallway of Kate's house

For a complete list of all 13 note locations, you can check the comprehensive Slender: The Arrival Guide on Steam. Slender: The Arrival - The Complete Guide (2016) Slender The Arrival

Unlike the "Eight Pages" in the park, which are primarily a gameplay mechanic to trigger Slender Man's pursuit, these documents function as that unlock achievements and fill out the Scrapbook menu. They reveal that: