The results of the 1876 presidential election between Samuel Tilden and Rutherford Hayes were close enough to require recounts of ballots in Louisiana. President Ulysses S. Grant sent this telegram ...

The Civil War became the first conflict in which arrangements were made for deployed soldiers to vote. Who the Union soldiers would support—President Abraham Lincoln or their former commander, George ...

Participants commemorating the fiftieth anniversary of the 1963 March on Washington carried posters that voiced concern over the possible erosion of gains made by the civil rights movement after the ...

Bostonians protested the Supreme Court’s 2010 decision in Citizens United v. Federal Election Commission. The court ruled that the First Amendment protected the right of corporations, associations, ...

During the summer of 1964 the Student Nonviolent Coordinating Committee (SNCC) sent volunteers into Mississippi’s African American communities. They registered voters and taught civics, voting rights, ...

This is an example of the first commercially sold handheld graphing electronic calculator, introduced by Casio in 1985. The sides of the calculator are black plastic, with a metal keyboard and back.

This handheld electronic calculator has a black plastic case. In addition to ten digit keys, it has a decimal point key and a percentage key, an on/off switch, and yellow clear and clear indicator ...

Open every day, except December 25, from 10:00 a.m. to 5:30 p.m. Admission is free and no tickets are required.

This is an example of a slightly later version of the Casio fx-7000G graphing calculator introduced by Casio in 1985. The sides of the calculator are black plastic, with a metal keyboard and back. As ...

This is an example of the first model of a scientific calculator marketed by Texas Instruments. The handheld electronic calculator has a black- and ivory-colored plastic case with an array of ...

The American Safety Lamp & Mine Supply Company hired M.D. Cremer of England to produce this lamp around 1913. M.D. Cremer, a former director of the Wolf Safety Lamp Company in England started the ...

This John Davis & Son safety lamp manufactured in the early 20th century is notable for its prominent padlock latch. Many mining safety lamps were fueled, locked, and distributed at the entrance of ...