In 2006 I had been in touch with Lane Brunner at the American Numismatic Association and he told me Ed Deane at the Harry Bass Foundation was working on the NIP index software. But I don't know the status of this project today. It's a very worthwhile one. Harry Bass started the effort and by the time of his death the NIP index had pretty good coverage of U.S. numismatic periodicals.
John Nebel and I designed and built a mechanism intended to help automate the entry of E-Sylum entries into the NIP index. Each week an email message is generated with the contents of each E-Sylum issue. The email could be sent to a program to automatically update the NIP index, or in the interim, to the human who updates it by hand. But that email still isn't being used.
Librarians and researchers note - if you'd like to receive these emails, let us know.