The book was worth 10K, by the way.

There's a very tactful, measured essay up on the Antiques Roadshow blog called "Understanding Concerns about Lewis Carroll". The essay is specifically related to an AR episode from last summer, in which a guest brought in a signed 1st edition of Through the Looking-Glass, and What Alice Found There, accompanied by a letter Carroll had written to one of his "child-friends", 11-year-old Mona Margaret Paton. The essay does not take a firm position on whether or not Carroll's relationships with children were inappropriate, but it does a good job of summarizing the 150-year-old mystery.