In Carl Sandburg's poem "Fog," the fog comes on what?

Novelist Carl Hiaasen joined which newspaper in 1976 and has written a column for it since 1985? Carl Jung often spoke of the collective what? Carl Maria von Weber's 1826 opera, subtitled "The Elf King's Oath," is named for which king of the fairies? Carl Sandburg co-wrote a 1932 biography subtitled "Wife and Widow" about which first lady? 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 Stokes, the first Black mayor of a major U.S. city, led which Ohio city from 1967 to 1971? Carl "The Truth" Williams lasted just 93 seconds in the ring with which heavyweight on July 21, 1989?