Are 1e and 2e CTD books available as print on demand from DriveThruRPG?

I'm trying to track down several books for Changeling the Dreaming. Fortunately, many of them are available on DriveThruRPG, but some are exclusively listed as PDF only while others come in multiple print formats.

One book I'm specifically looking for is War In Concordia, which is a PDF only book. Would this be an oversight for print-on-demand functionality or is the fact that most pre-C20 books are only available in a single print format indicative of only C20 books being print-on-demand?