This compact cylindrical handheld stepped drum calculating machine has gray metal sides and a black top and operating handle. Eleven slots along the side of the cylinder have plastic red and black ...

This miniature copperplate press with blankets and blanket-lifting pulleys is made of brass and mounted on a wooden base. It dates from the early 20th century. The press has a height of 9.5 inches and ...

William Hey (1736–1819), a surgeon in Leeds, presented this type of saw in his Practical Observations in Surgery (London, 1803), noting that he had used one for cranial operations for twenty years and ...

Measurements: overall (folded): 17 in x 11 1/2 in x 1/16 in; 43.18 cm x 29.21 cm x .1016 cm ...

The Constitution did not require white and African American children to attend the same schools. Social separation of blacks and whites was a regional custom; the states should be left free to ...

Our mission is to empower people to create a just and compassionate future by exploring, preserving, and sharing the complexity of our past.

A desire to remove employees from Manhattan’s teeming humanity, particularly organized labor and “the machinations of the anarchists and socialists,” inspired William to purchase 400 acres across the ...

Lincoln's Emancipation Proclamation dramatically changed the meaning of the war by declaring that all persons held as slaves in states still in rebellion were "thenceforward, and forever free." ...

ENIAC was built by a team of engineers at the Moore School at the University of Pennsylvania between May 1943 and February, 1946. The team was working under contract for the Ballistics Research ...

The indications or uses for this product as provided by the manufacturer are: A diuretic for the kidneys and a mild laxative. "Swamp-Root" tends to promote the flow of urine thereby aiding the kidneys ...

Most of the incarcerated Plains Indians who prepared ledger drawings at Fort Marion were young, in their twenties. With tuberculosis widespread among Indians, many of the Fort Marion artists, ...

Obverse Text: Romanization: TA / CH'ING / T'UNG / PI / HU / PU / PA / TA / RANG / A / TO / RO / I / A / NIAI / WEI / LE / HE / PING / WU TANG / CHIH / CH'IEN / JU / SHIH / WEN (Translation: Copper ...