The McDonald's concept was introduced in San Bernardino, California by Dick and Mac McDonald of Manchester, New Hampshire. In 1937, Patrick McDonald opened "The Airdrome" restaurant at the Monrovia Airport in Monrovia, California. Hamburgers were ten cents, and all-you-can-drink orange juice was five cents. In 1940 his two sons, Maurice and Richard, moved the entire building and the restaurant was renamed "McDonald's". The first McDonald's fast food restaurant is now non-official museum.