Hi, I've been trying to research Piano Jazz, as well as locate a lot of the older episodes, and the .pdf database mentioned is very good as a guide. Ken is right that it is neither 100% accurate (DD Jackson's 2000 show is missing, for instance) or inclusive. Another useful information resource is the Sessionography that the late Dr. Michael Frohne published in 4 parts, which is still on the web under his jazz research website, Jazz Realities: https://jazzrealities.blogspot.com/search/label/Marian%20McPartland Frohne was trying to get information on every Piano Jazz show and combed all the old NPR websites, musicians, as well as key NPR staff who produced or were connected to the programme. He is pretty successful, while still being neither 100% accurate (he has the wrong Bobby Short episode for the CD release on The Jazz Alliance, for example) or inclusive. This wonderful programme is still waiting for its definitive guide!