These sites will provide a number of individual history resources, often with lesson plans and teaching aids.
This is the Library of Congress and in addition to primary source materials it also provides lesson plans. There are some concerning African American history which might tie in with the Zora Hurston book.
Similar to the Library of Congress site but from the NJ Digital Highway.
The Smithsonian's educator site -- interesting item -- the first lesson on the list is a Rutgers student college yearbook. The student is from Texas in 1860 and some of the yearbook inscriptions pertain to regional divisions in the country. There is a lesson plan, and a large poster of yearbook inscriptions and a timeline that go along with it.
The National Endowment for the Humanities offers lesson plans and online resources for a variety of areas. This link is for their history section.
Children and Youth in History site from George Mason University has a number of useful online collections.
Individual or Stand Alone Resources
These sites were created by individual scholars or locations and are not part of larger organizations. There are a large number of stand alone sites. This list is intended simply to provide some examples.
The Trans-Atlantic Slave Trade Database: http://slavevoyages.org/tast/index.faces
Valley of the Shadow: Two Communities in the American Civil War: http://valley.lib.virginia.edu/
Particularly Relevant to This Year's Big Read: Their Eyes Were Watching God
Florida Digital History Collection: http://www.unf.edu/library/guides/floridahistory.html
This site includes a link to a collection of recording of Zora Neale Hurston singing African American folk songs.
Folkore in Zora Neale Hurston's Their Eyes Were Watching God (from National Endowment for the Humanities): http://edsitement.neh.gov/lesson-plan/folklore-zora-neale-hurstons-their-eyes-were-watching-god