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This is the first reclining dental chair designed and built by John L. Naughton (1915-1999) of Des Moines, Iowa in 1958. Its success led to the establishment of Den-Tal-Ez, Inc. Ref: N. Kremenak, ...

In this lesson plan students will examine primary sources to determine the level of threat caused by the buildup of Soviet ...

In this lesson, students will examine primary sources to understand John Brown’s actions in Harpers Ferry and will develop a ...

Discover the fascinating story of penicillin, an antibiotic that revolutionized the medical world. From its humble beginnings ...

This lesson plan outlines topics for short research projects and classroom performances related to the Mexican War. Have ...

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

The Scovill Manufacturing Company of Waterbury, Connecticut produced this token during the late 19th century. The Scovill Company was established in 1802 as a button manufacturer and is still in ...

This commemorative token was made by the Scovill Manufacturing Company of Waterbury, Connecticut during the mid-20th century. Scovill was established in 1802 as a button manufacturer and is still in ...

Founded in 1909, the NAACP is the nation’s oldest civil rights organization. Throughout the 1920s and 1930s, the association led the black civil rights struggle in fighting injustices such as the ...

The Smithsonian’s National Museum of American History recently collected the laptop used by an IRS Criminal Investigation ...

This Original Kodak camera, introduced by George Eastman, placed the power of photography in the hands of anyone who could press a button. Unlike earlier cameras that used a glass-plate negative for ...