This “book” is made up of hundreds and hundreds
of clay tablets etched in Old Assyrian cuneiform. No
complete collection exists. Rassam had only a portion.

More tablets languish in the basements of the British
Museum as part of the confusion of artifacts recovered
from the Library of Ashurbanipal in Nineveh
in 1849 and 1852. These have been digitally photographed
and stored in searchable databases noting the
kinds of clay used, the probable ages, and preliminary
translations of intact portions.

Finally, many tablets from Winds Unknown to Adad are stored in the
Iraq Museum.

The more sources the Agents find and study, the
more they learn.

Requires a Foreign Language (Akkadian) test, or Foreign Language (Arabic) for Rassam’s portion, each attempt taking 2D4 days.

Any portion of the tablets describe otherwise unknown demons of the stars and of the “winds unknown to Adad” (the chief Old Assyrian storm god). These entities are considered “unwholesome” by the author or authors of these tablets.
That is significant, considering that the Assyrians were hardly known for gentleness. The tablets were inscribed to teach readers how to conjure, propitiate, and control those star-demons. One such demon or god was called the Father of War. The tablets say Assyrian armies were unconquerable with the fearsome Father of War at their head.

Detailed study of any portion of the tablets takes much longer.

In Akkadian with Arabic translations. Study time: weeks. Unnatural +4%, SAN loss 2D4.

Rassam’s tablets are accompanied by his translations
in Arabic, demonstrating what the tablets
say and in what order they should be read. He also
notes where he believes gaps in the narrative are. They
have the details one needs to re-create grim rituals
and sacrifices to the star-demons just as the ancients
performed them. Some tablets are missing from certain
rituals.