National Museum of American History

This 51-1/2" wooden T-square has a scalloped top piece attached to the handle by 6 brass screws. A hole at the end of the handle is for hanging the instrument. It has no markings, but paint and ink stains on the handle indicate it was heavily used.

Smithsonian National Museum of American History Renovation di SOM - Skidmore, Owings & Merrill

Historians and History Museums: Offsite Sessions at the Smithsonian's National Museum of American History, Perspectives on History

Smithsonian National Museum of African American History and Culture – Washington, D.C. - H.J. Russell & Company

Smithsonian Institution National Museum of African American History & Culture — Davis Brody Bond

National Museum of American History - Wikipedia

National Museum of American History — Museum Review

National Museum of African American History & Culture, Washington, DC, USA

Five Facts about the Smithsonian's African American Museum of History and Culture - New Orleans Museum of Art

The sad & sorry Smithsonian

National Museum of American History Collects History Related to Lesbian, Gay, Bisexual and Transgender History

Smithsonian's National Museum of American History, Washington, United States — Google Arts & Culture

Rooftop Views ~ National Museum of American History : Design Cuisine

The Smithsonian's African American History Museum Is Crushing and Triumphant - The Atlantic

National Museum of American History, Washington DC

National Museum of American History Public…