Images

A 1947 photograph of the Kon-Tiki expedition raft taken from an attached dinghy as the raft crosses the Pacific Ocean on its way from Peru to Polynesia.

Vaccines are biological preparations that train the immune system to recognize and respond to specific infectious agents, reducing the risk of disease and its complications...

A coyote communicates with other animals at Rocky Mountain Arsenal National Wildlife Refuge by howling. Photograph by USFWS (US Fish and Wildlife Service), 2011.

Quanah Parker, prominent chief of the Comanche Indians with a feather fan. National Archives and Records Administration, Washington, D.C.

Two Zuni girls, photographed by Edward S. Curtis, c. 1926, published in The North American Indian. Library of Congress, Washington, D.C.

She-we-na (Zuni Pueblo). Kachina doll (Paiyatemu), made of wood, pigment, horsehair, feathers, wool, hide, cotton, tin, ribbon, 22 1/2 x 9 x 8 in. (57.2 x 22.9 x 20.3 cm), from Zuni, New Mexico, late 19th century. Brooklyn Museum...

Men work on the construction of the Erie Canal in Scotia, New York. While the exact date of this photograph is unknown, the construction of the canal took place between 1817 and 1825. The original Erie Canal was 363...

Canal boats on the North River (now referred to as the Hudson River) in New York, illustration by William L. Stone and Cadwallader D. Colden, issued in 1825 to be presented to the Mayor of New York City to celebrate...

DeWitt Clinton (1769-1828), US politician and naturalist, oil on canvas portrait by Rembrandt Peale, 1823. Clinton served in several political roles, including Mayor of New York City and Governor of New York. As the latter...

A map of Erie Canal c. 1840. The canal, constructed between 1817 and 1825, stretches 363 miles (584 km) from the Hudson River at Albany, New York, to Lake Erie at Buffalo, New York.