a friend of mine showed me the attached letter:
November 14th, 1873: Letter from Luebeck (Germany) to Palermo (arrival November 20th 1873), vertical slit and discolored paper (disinfection ?).
Unfortunately I could not help him out. Does anybody can help out regarding the following questions:
- Where did the disinfection took place?
- Was there any special epedimic as reason for an disinfection at this specific time?
Thanks in advance,