The scholarly record is an ever-evolving network - or graph - of truth assertions on which each discipline bases its discussions, and against which each discipline measures its progress. But what if the scholarly record is missing a significant number of truths? In this article, you will learn about the scholarly record, what it comprises, and what's missing. You'll discover that the volume - and value - of what's missing, called grey literature, has been. Grey literature is a costly asset that's going to waste. [ABSTRACT FROM AUTHOR]