This is a very good general start page at the Voices From the Gaps site. There, you'll find photos of Kincaid and book covers, a biography, a bibliography, and some related links.
When Kincaid gave a talk for the New York State Writers Institute, the organizers prepared this biography. You'll also find a photo of Kincaid on this page, and a link to Kincaid talk about writing.
Here's a Kincaid biography, along with some photos, links, and a bibliography. What is given special emphasis here, and not in the biography above?