This search includes all content on the Scottish Parliament website, except for Votes and Motions. All Official Reports (what has been said in Parliament) and Questions and Answers are available from 1999. You can refine your search by adding and removing filters.
Some of my research says that it is 5,000 years since it was produced and other research says that it dates from the third millennium BC and, thus, is perhaps not quite as old.
Some of its archives go way back, deep into the 19th century, with one or two interesting documents that I found dating from the 18th century or even earlier.