Dr. Forsythe's note

Dr. Forsythe's note is a paper note in Fallout 4.

Location
The note can show up in the inventory of a randomly encountered settler or raider. When done so, it will reveal the Vault 81 map marker and provide a miscellaneous quest to "Investigate Vault 81" if such triggers have not already occurred.

Transcript
Записка доктора Форсайта