OpenBSD specific books I have

[WeakSauceIII]

Let me know if anyone knows of an OpenBSD book I'm missing.
I have -
Mastering FreeBSD & OpenBSD Security (O'reilly)
Absolute OpenBSD (no starch)
The book of PF (no starch)
The openBSD PF book (reed media)
Secure architectures with Open BSD (Addison wesley)

More general BSD but still helpful
BSD unix toolbox
BSD hacks
The design and implementation of freeBSD
Absolute BSD


I have seen a few more but they are outdated. Anything OpenBSD specific and newer than lets say 2006?

[tuck]

One older book (2003)
Building Firewalls with OpenBSD and PF - Jacek Artymiak

And one I only noticed on the openbsd.org shop (only 100 copies printed)
The OpenBSD Command-Line Companion - Jacek Artymiak

Edit: I'm not shure if " The OpenBSD Command-Line Companion" has ever been sold and if there were realy 100 copies on sale.