This brief video tells the story of 11th-century Benedictine monk Guido d'Arezzo and the beginning of sheet music and musical scale.

This video explains what Gregorian chant is, exploring its origins, importance, and general characteristics.

Constitute offers access to the world's constitutions so that users can systematically compare them across a broad set of topics. It also provides instructional material.

This site explores the ways in which people have interacted with their environments in the past.

This collection contains an array of material, including trial transcripts, cases, articles, books, photos, and narratives, about American jurist Clarence Darrow’s life and legal career.

This guide is designed to help educators create inclusive and accessible higher education classrooms—beyond accommodation—for a range of students with disabilities.

This resource allows K-12 teachers to explore and share tips, strategies, and resources for teaching students in the social sciences.

This site offers a curriculum for teaching about the Modern Middle East and North Africa.

This Perspectives on History article assesses the state of the field of American Peace History.

This is a rich history about how the greatest outdoor show on earth was born.