Now this is a job I would have enjoyed:
Established in 1935, the Pack Horse Library Project was aimed at providing reading materials to rural portions of Eastern Kentucky with no access to public library facilities. Librarians riding horses or mules traveled 50 to 80 miles a week up rocky creekbeds, along muddy footpaths, and among cliffs to deliver reading materials to the most remote residences and schools in the mountains. Some homes were so remote that the book women often had to go part of the way on foot, or even by row boat.
---Kentucky Department for Libraries and Archives (hat tip to John)
And how weird is it that while I'm reading a book about a man dying from mercury poisoning, my daughter is being trapped in a library possibly contaminated by mercury?