Carl Maria von Weber's 1826 opera, subtitled "The Elf King's Oath," is named for which king of the fairies?

Carel Fabritius, Rembrandt's finest student, died in a 1654 explosion in which Dutch pottery city? Carel Struycken, the giant on "Twin Peaks," took on which role in the 1991 film "The Addams Family"? 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 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?