I can kind of understand the lack of records. When I worked at the bank we were required to keep a lot of records, some for many years. But as soon as the dates passed that we needed to keep things records were routinely destroyed.
Keeping records, especially paper records, takes a lot of time, storage space, and for most businesses doesn't create a nickel of income. It is possible that the records still exist somewhere, but just aren't easily assessible. The method of storing records has gone from paper to micro fiche, to how many different variations of computer storage.
At the bank, on those rare occassions when we might have needed to dig back for something it could take a lot of time to find exactly what you were looking for. For example, if what you are asking about is stored on micro fiche, I'd be willing to bet that the majority of current employees wouldn't even know how to go about looking something up even if it were still in storage.
It sure would be cool if someone at Bear were able to find the treasure trove of old records. But even if they did, it could take weeks or months of someones time to put together all of the information that we as people interested in the old stuff would like to find. And I don't see how they could justify spending the time and money to do that without some way of making it pay for itself.