Child labor

Child Labor in America Lesson Plan
Children have always worked, often exploited and under less than healthy conditions. Industrialization, the Great Depression and the vast influx of poor immigrants in the 19th and 20th centuries, made it easy to justify the work of young children.
http://memory.loc.gov/learn/lessons/98/labor/plan.html

Lesson Plan
Students are immersed in primary source materials that relate to child labor in America from 1880-1920 to gain a personal perspective of how work affected the American child within a rapidly growing industrial society.
http://memory.loc.gov/learn/lessons/98/built/index.html

The National Child Labor Committee campaigned for tougher state and federal laws against the abuses of industrial child labor, and Lewis Hine was its greatest publicist.
http://www.loc.gov/exhibits/treasures/trm032.html

Money: Paper Money
http://www.loc.gov/rr/business/money/paper.html

United States Money:
A Guide to Information Sources
http://www.loc.gov/rr/business/money/money_index.html

National Child Labor Committee (NCLC)
http://memory.loc.gov/pp/nclchtml/nclcabt.html

Currency
Along with converting currency, this site creates pocket currency converters for travel and creates graphs showing historic conversion rates.
http://www.gocurrency.com/