What is on These Tapes?

Here is a small sample of the 947 tapes I have lying around the house with no labels. Throw in the fact that I have a bunch of empty tape boxes and a bunch of tapes without tape boxes.

Clearly, 'one of these' days I will look to see what is on these things. Perhaps I'll catch the birth of one of my sons or finally figure out who really killed Kennedy. Hard to say...