Get your towel ready—previously-unseen Douglas Adams material will be included in an upcoming biography, The Guardian reported earlier this morning.

Adams, who wrote the five novels in The Hitchhiker’s Guide to the Galaxy series and contributed to a number of television and radio programs, died unexpectedly in 2001 at the age of 49. He left behind an unfinished manuscript, which was found on his hard drive and published posthumously in 2002’s The Salmon of Doubt.

But now, 12 years later, Adams’ family has granted biographer J.L. Roberts unrestricted access to Adams’ papers.

“The Salmon of Doubt was taken from the hard drive of all Douglas’ many different Apple Macs,” Roberts told The Guardian. “Nobody had ever thought about a paper trail though.”

Indeed, Roberts found numerous boxes of Adams’ content housed in St. John’s College, his alma mater. The material includes unpublished excerpts from The Hitchhiker’s Guide to the Galaxy and Life, The Universe and Everything, an alternate original pitch for the novel, a script for an unaired television series and passages about undeveloped plots with truly Adamsian titles like Baggy the Runch and The Assumption of Saint Zalabad.

Since many of these excerpts are unfinished, Roberts is making an effort to contextualize the material. He said that he spends a substantial part of the book considering what Adams would have wanted and where he was going with these ideas.

“There are so many great Douglas Adams jokes which have been completely air-sealed for the last 20 years,” Roberts said. “I think it’s wonderful that we finally get to read some of this stuff.”

The biography, titled The Frood (an Adams-created word), is set to be released in October.