National Museum of American History

This disentanglement puzzle consists of two entangled bent nails that are to be separated.A solution to the puzzle is given in a 1920 A.C. Gilbert publication cited below.

About National Museum of American History

National Museum of American History - Carltonaut's Travel Tips

American History Museum Exhibit Explores Pop Culture

Smithsonian National Museum of African American History & Culture

The sad & sorry Smithsonian

The National Museum of American History: Abbott, Shirley: 9780810913639: : Books

Smithsonian National Museum of American History - Cinnabar

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

A visitor's observations on the National Museum of African American History and Culture, Part II

The Smithsonian National Museum of American History's New Exhibits Are Incredibly Timely

National Museum of African American History and Culture – Perkins&Will

National Museum of American History in Northwest - Tours and Activities

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

National Museum of American History in Northwest - Tours and Activities