What Was the Last Non-Electronic Source You Used?

Has your research been all digital? While some of us are unable to do onsite research, there are times when the only way to get at information is an actual book or paper record. There are few ancestors that can be researched completely without using at least one record that is not in digital form. When was the last time you either used an original record or received a copy of something that was not already scanned or digitized?