Even those that were only intended to be used. German language with a map and other data to pinpoint locations.
http://www.amazon.de/Flugpl%C3%A4tze-Luftwaffe-1945-davon-%C3%BCbrig/dp/3866190549
Unfortunately, the publisher's site, VDM Heinz-Nickel, does not allow for a direct google link to the book. Just enter the following title or author's name:
Flugplätze der Luftwaffe 1934-1945, Jürgen Zapf
Usual disclaimer,
Ed