== External links ==* YouTube - Vanguard (Flopnik) (in black and white)* YouTube - Vanguard TV3 Failed Rocket Launch (in color)* Google Newspapers - "The Ottawa Citizen" - "US fails to fire Satellite"== References ==
* Авангард (проект)* ИСЗ* YouTube - Vanguard (Flopnik) (in black and white)* YouTube - Vanguard TV3 Failed Rocket Launch (in color)* Google Newspapers - "The Ottawan Citizen" - "US fails to fire Satellite"