What is john w. shannon?

As an AI language model, I do not have access to up-to-date information about John W. Shannon. However, there is a prominent John W. Shannon who was a member of the U.S. House of Representatives from Missouri in the mid-20th century. He served from 1949 to 1961 and was a member of the Democratic Party. He was known for his support of labor unions and his advocacy for the construction of the Lake of the Ozarks, a popular vacation spot in Missouri. Shannon also served as the Chief of Staff for Missouri Governor Warren E. Hearnes in the 1960s.