Through England on a Side Saddle by Celia Fiennes
Celia Fiennes is remarkable for the journeys she made, in an effort regain her health, riding through the English countryside. As well as more local journeys she made two epic tours in 1697 and 1698 traveling as far as northern England and Scotland. Traveling for it's own sake was unusual in her day, there being few roads, even more unusual for a woman to travel (only accompanied by two servants). Her accounts of her travels seem to have been written around 1702, after she had retired from traveling, and were never published within her lifetime.