Mary Wollstonecraft attended services of the Unitarian Universalists, a liberal, non-denominational church. Their historical society has a great biography page on Wollstonecraft that outlines her career. It also has a helpful bibliography to further reading on Wollstonecraft.
This online encyclopedia looks at Wollstonecraft's contributions as a political philosopher. Her Vindication essays are some of the most eloquent analyses of human rights of the 18th centuries. We also recommend that you look up William Godwin's entry as well, to get a sense of just how radical these two were in their day.
The introductory sections to this invaluable reference guide are available online. It includes a detailed timeline of Wollstonecraft's life. You can also read an excerpt from the book by clicking on the "More information" link in the upper-left corner.
No, we haven't made the common mistake of confusing Mary Wollstonecraft with her famous daughter, Frankenstein author Mary Wollstonecraft Shelley. We just think that the elder Mary W. deserves her props as the maternal ancestor of a remarkably creative and iconoclastic line of artists. This chronology of Shelley's life explains all that happened after Wollstonecraft's early death in childbirth.
This biography of Mary Wollstonecraft is hyperlinked to the hilt. Click around on this page and you can learn about the life stories of Wollstonecraft and everyone she hung out with. It's a great tool for understanding her place in the web of English Romantics.
Mary Wollstonecraft's entry in the About.com women's history chapter is a clear, straightforward introduction to the woman who has been called the mother of modern feminism. It's hyperlinked to many other interesting articles within the same chapter.