- Nancy Drew, Betty Boop and more: 26 notable works entering the public domain in 2026 KSL.com
- The cultural works becoming public domain in 2026, from Betty Boop to Nancy Drew NPR
- Celebrate Public Domain Day with Betty Boop and Piet Mondrian Hyperallergic
- These notable works are officially in the public domain as 2026 arrives CBS News
- Betty Boop Enters the Public Domain, but Only as a Dog Reason Magazine
