DC Public Library Resources
All DC Public Libraries own several books on individual states for homework help (Call numbers JUV 972 - 979, and 996) , as well as various useful encyclopedias, atlases, and other reference sources (General US call number is JUV 973).
Is the book you need on the state you want checked out? You might want to try Student Resource Center Gold, available online from the library, free to all DC Public Library cardholders.
To get there: