Our overriding goal is to create an Inventory of data that are at risk, and whose unique scientific information is in danger of being lost to posterity. We define "data at risk" in this context as scientific data which are not in a format that permits full electronic access to the information which they contain. Such data may be inherently non-digital (e.g. handwritten or photographic), on near-obsolete digital media (such as magnetic tapes) or insufficiently described (lacking meta-data). Some born-digital data can also be considered "at risk" if they cannot be ingested into managed databases because they lack adequate formatting or metadata.