Circa 1996, if someone wanted more info on something such as - let's say "incest", you had to get up and walk across your 7500 sq ft house to the study, and then page though the dictionary until you find the entry. Today, you pull out your smartphone and visit wikipedia where you can read alot of interesting info such as: " Father-daughter incest was for many years the most commonly reported and studied form of incest. More recently, studies have suggested that sibling incest, particularly older brothers having sexual relations with younger siblings, is the most common form of incest, with some studies finding sibling incest occurring more frequently than other forms of incest. Some studies suggest that adolescent perpetrators of sibling abuse choose younger victims, abuse victims over a lengthier period, use violence more frequently and severely than adult perpetrators, and that sibling abuse has a higher rate of penetrative acts than father or stepfather incest, with father and older brother incest resulting in greater reported distress than stepfather incest." And this tidbit that I find interesting: "Childhood sibling–sibling incest is considered to be widespread but rarely reported. It is believed to be the most common form of intrafamilial abuse. Sibling-sibling incest becomes child-on-child sexual abuse when it occurs without consent, without equality, or as a result of coercion. The most commonly reported form of abusive sibling incest is abuse of a younger sibling by an older sibling. A 2006 study showed a large portion of adults who experienced sibling incest abuse have distorted or disturbed beliefs (such as that the act was "normal") both about their own experience and the subject of sexual abuse in general. Sibling abusive incest is most prevalent in families where one or both parents are often absent or emotionally unavailable, with the abusive siblings using incest as a way to assert their power over a weaker sibling. Absence of the father in particular has been found to be a significant element of most cases of sexual abuse of female children by a brother. The damaging effects on both childhood development and adult symptoms resulting from brother–sister sexual abuse are similar to the effects of father–daughter, including substance abuse, depression, suicidality, and eating disorders." I recall reading somewhere that there were books discovered in the study which addressed some type of improper sexual conduct. I cannot recall where I read this. So, is it true and if so, what are the titles of the books?