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.

National Museum of American History Family Guide: 9 Tips to Know Before You Go

Smithsonian National Museum of American History - Cinnabar

National Museum of American History

National Museum of American History - All You Need to Know BEFORE You Go (2024)

17 Awesome Things to See at the National Museum of American History - TRIPS TIPS and TEES

National Museum of American History

Smithsonian National Museum of American History

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

National Museum of African American History & Culture