We are learning more about the California home where police say 13 siblings were kept in subhuman conditions by their parents. >> Watch the news report here Although the children in the home, ages 2 to 29, were only allowed to bathe twice a year and eat once a day, they were allowed to write in journals, authorities said. District Attorney Mike Hestrin said in a press conference that the children kept hundreds of journals, and he believes they will be “very significant” in the upcoming court case, the Desert Sun reports. Hestrin added that he thinks the journals will provide “strong evidence of what occurred in that home.” >> Parents accused of holding their 13 children captive appear in court Researchers are also interested in the journals as they detail the firsthand accounts of the alleged abuse. One academic told the Desert Sun: “There is a good chance that being able to write may have kept them sane. In an interesting way, this may have helped them come to terms with the bizarre world they lived in.” He even compared them to the journals kept by Anne Frank. >> Dogs found in perfect condition in home where 13 siblings held captive The journals could prove valuable for prosecutors as they might provide evidence that could be used to cross-examine the parents, David and Louise Turpin. The Turpins are facing life in prison for a series of charges, including torture. >> Read more trending news The journals have not been made public, and law enforcement officials are currently in the process of reviewing them. The conditions in the home were unimaginable, authorities said. The children reportedly were beaten and chained to furniture. Neighbors recalled seeing them marching during the night. They were discovered when one girl escaped and managed to find a police officer, authorities said. Read more here.