The KiY tarot is going to get reprinted as part of a stretch goal of the Conspiracy Kickstarter, as far as I know. You can probably pre-order it on BackerKit.

You could also add the fan wikis:

http://fairfieldproject.wikidot.com/

https://fairfieldproject.fandom.com/wiki/Delta_Green_Wiki

And I created this scenario database, which could be useful as well:

https://dg-scenario-database.com/