Janitor's Note - Hamilton is a written note found in Dishonored 2.
I know you're busy these days with your experiments and all, but since you seem to be in the Duke's good graces, I was thinking maybe you could request extra funding for the old basement?
With most of our personnel sacked, I can't deal with the flood, so I just sealed it off for now. That won't do the building any good, long term. And anyways there is still some stuff stored in there, from Addermire's old days. Some of it looks valuable.
The note can be found on the floor next to Hypatia's desk in her office during the mission The Good Doctor.