Thomas Edison is shown offering his incandescent light bulb in his right hand, representing his major achievement, and holding in his left hand a notebook recording progress on his experiments. Edison and his experimenters collaboratively filled more than 3500 laboratory notebooks, creating a detailed record of sketches, notes, and ideas for new inventions. Those notebooks stand as tangible reminders of Edison's greatest accomplishment: team-based research and development in well-equipped laboratories devoted to creating new technologies for the benefit of all.