- Handbook of Texas Online - Community history and information. Includes references and further information sources.
- Newcastle, Texas - Historical information on how Newcastle got its name, and its agricultural importance to North Central Texas.
- Newcastle Local News: Topix - Local, regional, and statewide news collected from diverse sources on the web.
- Resource Guide - Historical information, facts and figures.
- The Weather Channel - Newcastle, Texas - Local forecast, current conditions, radar, and links for national and international weather information.
- Weather Underground - Current conditions and forecast. Includes active weather advisory bulletins.
