Who's that person, and why are they important?  What happened way back then and what's it all about?  The DiMenna Children’s History Museum at the New-York Historical Society presents 350 years of New York and American history through character-based pavilions, interactive exhibits and digital games, and the Barbara K. Lipman Children’s History Library. The DiMenna Children's History Museum encourages families to explore history together through permanent installations targeted for children 8-13 and a wide range of family learning programs for toddlers, children and preteens.