My favorite title from those two KRONOS special issues is C.J. Ransom's "Sagan's Appendices: A Quick Appendectomy".
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I would love to read that, do I have to join KRONOS - or can you please provide a link?
Ceased publication years ago, but is available on the Catastrophism CD-ROM (along with Pensee', a previously defunct predecessor of KRONOS). Generally a search of the used book search engines will turn up copies, or entire sets.
http://www.kronia.com/used.html
http://gallery.bcentral.com/Gallery/ProductListing.aspx?GID=4907389&Dept=215904