The Mercury Space Program was the first attempt by the United States government to put a man in space. The idea was to do it before the Soviets. They won that race in April of 1961 when Yuri Gagarin became the fist person to orbit the Earth. A month later Alan Shepherd became the first American in Space. But in October 1961, the US put a man in orbit around the Earth that was John Glenn.
That said, here are some great diagrams of the Mercury Command module and the escape system and the control console.
Source: Wiki and Bing Photos