Purchasing a large vintage slide collection

I recently purchased this large collection of 2500 35mm slides, mostly Kodachromes but also with some Ektachromes and Agfa specimens included. What kind of content is on these? I don't know everything exactly, but the dates range from the 1950s to the 1990s and the subjects appear to be everything from scenes of everyday life to travel to various random images. One thing that my "Ghosts of DFW Music History" blog series has made crystal clear to me is my need to assemble a collection of stock images from which to draw whenever I need illustrative content for one of my projects. And I can't realistically expect to have examples of everything I might want to use someday in the (admittedly sizable) collection of photos I've taken myself. Dealing with ownership and copyright concerns is a royal pain in the rear when I want to use someone else's material, so the opportunity to acquire a large collection of previously unpublished and unencumbered images at a low cost is something I didn't want to pass up. While I expect that only a small percentage of these will ultimately be of interest to me, even two or three percent will justify the cost of the entire set.