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.

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Guide to the National Museum of American History

National Museum of American History (Smithsonian): The District

The Smithsonian's Black-History Museum Will Always Be a Failure and a Success

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

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

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National Museum of American History Public…

About National Museum of American History

Smithsonian National Museum of American History - WanderDisney

National Museum of American History - Carltonaut's Travel Tips

Smithsonian National Museum of African American History and Culture / Freelon Adjaye Bond/SmithGroup