David Nelson Crosthwait, Jr. (1898-1976)
David Nelson Crosthwait, Jr., was an African American inventor who is known for creating the heating system for Radio City Music Hall in New York City, New York. Crosthwait was born on May 27th 1898 in Nashville, Tennessee. He grew up in Kansas City, Kansas … Read MoreDavid Nelson Crosthwait, Jr. (1898-1976)