Carl Stokes, the first Black mayor of a major U.S. city, led which Ohio city from 1967 to 1971?

Carl Sandburg co-wrote a 1932 biography subtitled "Wife and Widow" about which first lady? In Carl Sandburg's poem "Fog," the fog comes on what? Carl Schurz was a leader of the Mugwumps, Republicans who bolted the party in 1884 to back which Democrat? Carl Spackler, Ty Webb and Lacey Underall are characters in which 1980 comedy? Carl "The Truth" Williams lasted just 93 seconds in the ring with which heavyweight on July 21, 1989? Carl Weiss's remains were exhumed to investigate his alleged 1935 assassination of which Louisiana politician? In the mid-1800s, German physician Carl Wunderlich made which instrument a standard tool of medicine? Carlo Marx, Remi Boncoeur and Dean Moriarty are characters in which novel?