National Museum of American History

This brass rolling ruler is engraved with measurements on all four sides. There are rollers on either side of the ruler, connected by an axle. The object is well worn with a dent on one corner, and it is screwed together.

Smithsonian National Museum of African American History and

The sad & sorry Smithsonian

Kid Friendly Guide: National Museum of American History - Sunshine

National Museum of American History print — Victory Dance Creative

Smithsonian National Museum of American History : Washington DC

A People's Journey, A Nation's Story

National Museum of American History

Ultimate Guide To The National Museum of American History

Smithsonian National Museum of American History

National Museum of American History in Washington DC

Presente! exhibit opens on the National Mall in Washington D.C : NPR

The Smithsonian National Museum of American History's New Exhibits