Malignia Americanus is the title of a fictional book created by M.B. Willner, it made it's appearance in the scenario The Horror on Old Hill.
The book was written by Cotton Mather and published in the 1690s.
The book discusses a number of strange cults that came from Europe to the Massachusetts colonies.
Copies of the book can be found in the Miskatonic University Library, the Yale University Special Collection, the Harvard Library Weymouth Collection and with a number of private collectors (Probability of finding in a private collection is %15 + Owners Cthulhu Mythos score).
Role Playing Game Stats
Sanity Loss 1D3, Cthulhu Mythos +3 percent, no spells, requires a Latin roll to read.