Which of the following works have NOT been authored by John Stuart Mill?
A) Subjection of Women
B) Thoughts on Parliamentary Reform
C) Past and Present
D) Explorations
E) On Liberty
Choose the correct answer from the options given below:

The correct answer is C and D only.

To determine which of the works were not authored by John Stuart Mill, let us analyze the authorship of each of the given options:
• A) Subjection of Women: This is a landmark essay published in 1869 by John Stuart Mill, in which he argues in favor of gender equality and women's right to vote.
• B) Thoughts on Parliamentary Reform: This pamphlet was written by John Stuart Mill and published in 1859, outlining his ideas on electoral reform and proportional representation.
• C) Past and Present: This influential book was written by the Scottish essayist and historian Thomas Carlyle and published in 1843.
• D) Explorations: This is a collection of essays and lectures by the Irish poet and playwright William Butler Yeats (W.B. Yeats), published posthumously in 1962.
• E) On Liberty: This is one of John Stuart Mill's most celebrated philosophical works, published in 1859, which defends individual freedom against state and social control.

Based on this analysis, the works that were NOT authored by John Stuart Mill are C and D. Therefore, the option "C and D only" is the correct choice.