How were critics Carl and Mark Van Doren related?

Critics Carl and Mark Van Doren related were brothers.

Both were members of the faculty of Columbia University, Carl from 1911 to 1930, Mark from 1920 to 1959.

At the 1933 awards, the Oscar for Best Director was not for Frank Capra, who won? Frank Lloyd won the Oscar for Best Director at the 1933 Academy Awards, for Cavalcade. Capra did not win in 1933 for Lady for a Day, but he won the next year for…
Where did Rob and Laura Petrie of “The Dick Van Dyke Show” (CBS, 1961-66) live? Rob and Laura Petrie of "The Dick Van Dyke Show" had a house in New Rochelle, New York.
How many stars did MGM have in its heyday? In 1938, MGM had about 120 stars and featured players under contract.
Who played Beulah the maid in “Beulah” (ABC, 1950-53)? Two people: Ethel Waters (1950-52) and Louise Beavers (1952-53) played Beulah the maid in "Beulah" (ABC, 1950-53). Shirley Booth was Hazel Burke the maid in "Hazel" (NBC, CBS, 1961-66). Ann B. Davis played…
When did George Reeves shoot himself? George Reeves shot himself on June 16, 1959. The police ruled that the former star of "The Adventures of Superman" (1952-57) had committed suicide, though some have suspected murder. He was planning to…
From what work did Matthew Arnold get the phrase “sweetness and light”? From Jonathan Swift's The Battle of the Books (1704). Matthew Arnold used the phrase "sweetness and light" in Culture and Anarchy (1869) to elaborate his idea of culture as a humanizing and ennobling…