
Cable Car
Cable car was patented by Andrew Hallidie in 1871. San Francisco’s hilly terrain made transportation difficult for the horse-drawn carriages. Hallidie’s invention made life better for both people and horses. By 1920 most cities had changed to the cable car system. Children can learn more at: Cable Car.
First United States mint was established in Philadelphia in 1792. It produced silver half-dismes and dismes (now spelled dimes). The mint is still active, and other mints are functioning in Denver and San Francisco. Children could visit the mint’s website, 