A carefully sealed letter.
This is a quest item which Geralt acquires from a chest during his investigation of the Salamandra bandits' hideout in the sewers. The location is their fisstech production laboratory.
| Letter from Gellert Bleinheim
...Our swamp encampment is not sufficient enough. Herbs are not supplied at a rate ensuring continuous fisstech production. This needs to change as soon as possible — putting more people to work seems to be the best solution. Concerning other matters...
There is no visible signature on the letter.