The only authenticated printed letter describing smallpox blanket delivery as deliberate was by Jeffrey Amherst; the English didn't know about germs, but they knew that diseases spread somehow. Anyway, there is no proof that he followed through with his suggestion in a letter, but a month later, there was a large smallpox outbreak. Probably not a coincidence.

I cannot imagine being worried about where the pillows have been while sitting down in a seat that has been used by thousands...

Folks - this message is from 2001!