Providing CUSIP identifier

It would be great if you guys provided the CUSIP or perhaps ISIN identifier along with the other basic company summary items. I say this because a lot of times SEC filings, brokers, etc will use these to unambiguously identify a security, and I've found this quite helpful in more obscure cases like symbol changes, mergers, acquisitions, etc. Not sure if your data sources/providers would be able to furnish that, but it would be nice to have in any case.