Read "Washington, D.C. with Kids" before you travel

On the right side bar is a trip planning book to Washington, D.C. I recommend whether you are traveling with children or alone. It covers so many more places and things to do than other guidebooks like the

-> Folger Shakespeare Library,
-> Voice of America,
-> U.S. Naval Observatory,
-> U.S. Chess Center,
-> The Washington Post,
-> National Capital Trolley Museum,
-> National Weather Service, and
-> National Museum of the Marine Corps.

You'll have to do more online research to plan your stay, but the book offers web links for most entries.

It also offers all the maps you need and helpful tips.

Don't be fooled. The book is useful for adults, too!