This exhibition traces the history of commercial air transportation in the U.S. from 1914 to today and discusses how technological innovations have revolutionized air travel .

On view in Part II of this exhibition are U.S. stamps printed from 1894 to the 1920s from the Benjamin K. Miller Collection.

This exhibition is dedicated to 20th-century icon Katharine Hepburn, who carefully constructed and maintained her own myth from her earliest days in the studio system through more than 50 years on stage, screen, and television.

Photographs illuminate the variety of ways that African Americans resisted and redefined an America that needed but rarely accepted its black citizens.

Culture and arts of the Tuareg people of Mali, Niger, and Algeria.

Through approximately 70 portraits and compelling authentic documents, this exhibition explores Spain's key role in the Revolutionary War and the founding of the new nation.

Witness the full range of the Mexican presence in the Smithsonian's collections through art and artifacts that span several centuries.

This exhibition brings together approximately 250 objects reflecting the unprecedented cross-cultural dialogue that followed the establishment of Portugal's world trading network.

Highlights contemporary art that incorporates portraits of iconic figures as a means to explore history and culture.

This is the first comprehensive exhibition that addresses the interaction between African art and the communicative power of graphic systems, language, and the written word.

In celebration of the 150th anniversary of the National Portrait Gallery, London. This exhibition included 60 works representing five centuries of British history.

This exhibition features approximately 100 photographs -- beginning with the era of the Beatles to 9/11 -- by New York-based, Scotland-born photographer Harry Benson.

The exhibition examines how a group of artists, The Painting Group, interprets the same subject—Justice Sandra Day O’Connor—at the same time.

See 55 dresses and more than 200 related items from the Plains, Plateau, and Great Basin regions in this exhibition of Native women's identity through traditional dress and its contemporary evolution.

This exhibition spotlights the oldest federal law enforcement agency and its role in fighting crime.

As hostilities between the colonists and the Crown grew, many people began protesting high postage rates by sending their letters "out of the mails."  Learn how Americans circumvented the official post during the Revolutionary War era.

The exhibition celebrates Baker’s life during the 100th anniversary year of her birth.

See 76 original artworks commissioned by the United States Postal Service during the last 50 years for stamps that pay tribute to American history.

With precise, up-to-date images captured by high-tech satellites, geologists, meteorologists, and other scientists can now study how the Earth changes from day to day and year to year.