This book is one of the most useful additions to my rather modest library of aviation literature.
The book can be ordered from Luftfahrt-shp.de. On the topic of airlines-related content, here are a few Wikipedia articles worth perusing:
Linux user, amateur photographer, aviation enthusiast, clueless developer of ADS-B station, Pellicola and Tinble, author of a bunch of books. I can mix a decent Negroni, too. You can reach me at me@dmpop.xyz