The lemonade stand is a widely used and recognized symbol of capitalism and in particular entrepreneurship. The selling of lemonade on the streets of New York can be traced back to when a New York youngster sold it to thirsty street car riders over… [more]
Thelma Norwood, a 7th-grade student in Nassau, Delaware, wrote this letter in 1925. The school was segregated, or used only by African Americans, while separate schools were maintained for white students. The letter expresses appreciation on Du Pont… [more]
This graph shows us the average year of menarche, a female's first menstrual cycle (often considered the beginning of puberty), from 1860 to 1980 reported by adult female patients at maternity clinics in Norway. It also includes data from Oslo school… [more]
