Check out the link to the main "fan" website. Somebody somewhere has MP3s for sale of almost the entire Jean Shepherd ouvre ~ hundreds and hundreds of hours worth. If the "Open Hearth" piece that you remember isn't included, there are probably several 45-minute shows during which he includes bits and pieces of the same story ~ there was a lot of "overlap" among his huge repertoire of monologues.

Where'd you go to college? Rutgers? (That's where Shep made most of his campus appearances.)