Look here:
http://rbhardy3rd.blogspot.com/2007/09/research-journal-mark-twains-angelfish.html
Not in the least comparable to Polanski’s perversions.
His first guests at the new house were two of the Angelfish, Louise Paine (left) and Dorothy Harvey (right), who arrived on June 20 for a week-long stay that involved chaperoned walks in the woods, billiards lessons, charades, romping with Tammany the cat, and storytelling in the inimitable Mark Twain style. Both girls were thirteen (born in 1895). Louise was the oldest daughter of Twain’s official biographer, Albert Bigelow Paine, who also lived in Redding. Dorothy was the daughter of Twain’s publisher, Col. George Harvey, the president of Harper & Brothers and editor of the North American Review.
For the dirty minded revanchists of the ‘Critical Theory’ school, please note the phrase “chaperoned walks in the woods”.
“Chaperoned” is the rebuttal word which destroys the nasty implication floated against Clements.