World War I Period

Adoption of Technology timelines

• From Visual Economics - shows percentage of people who had telephone, car (auto), electricity, stove, refrigerator, radio, etc. Does not show indoor plumbing or airplanes.
• Technology Adoption from the Economist - shows year invented and then how many years until 1/4 of people had electricity, telephone, radio, TV, etc.

Timelines of Inventions

• 19th Century (the 1800s) Innovation Timeline
• 20th Century (the 1900s) Innovation Timeline

Television

• Major Milestones in Television History - Globe & Mail

Airplanes

• The First Commercial Flight
• Timeline of Commercial Aviation

Timeline of Major Events of 20th Century

• History Timeline of 20th Century - About.com
• Wars of 20th Century - About.com