Hi all, I've been working on and off for a few months on a system for publishing ebooks, ETDs, and other digital library materials online to a more consolidated "Digital Library" application ( http://numismatics.org/digitallibrary). The framework ( https://github.com/AmericanNumismaticSociety/etdpub) was initially designed for quick and easy PDF indexing and publication of ETDs, but has evolved to a TEI publication framework for the NEH-Mellon Humanities Open Book Program grant we received recently. Part of this grant stipulates that open access books be made available in EPUB 3.0.1, so I got to work on a pipeline for dynamically serializing TEI into EPUB. It works pretty well, but there are some minor issues. The issues might be related more to differences between individual ereader apps in supporting the 3.0.1 spec than anything I might have done wrong in the serialization process (the file validates according to a script I've been running). We published our first open access ebook today: http://numismatics.org/digitallibrary/id/Miller-ANS-Medals. There's a link on the right to the EPUB file. I would greatly appreciate any feedback you can provide. I created a survey that will help in usability testing: https://docs.google.com/forms/d/10Prvpm5eDvjNZaeqgXZ7luLeSkVrOgZ3hJX5zjFBuSg/viewform . There is a dearth of decent information about EPUB usability testing on the web. If you are interested in more information about the framework, there's http://eaditor.blogspot.com/2015/12/the-ans-digital-library-look-under-hood.html and http://eaditor.blogspot.com/2016/01/first-ebook-published-to-ans-digital.html. It's highly LOD aware and is capable of posting to a SPARQL endpoint so that information can be accessed from other archival frameworks and integrated into projects like Pelagios. Ethan