Writer 6.0 Guide published. ODTs and cover files are on ODFAuthors, except
for the full book ODT which is too large:
https://www.odfauthors.org/libreoffice/english/writer-guide/published-lo-6.0
PDFs and ODTs of full book and individual chapters are here:
https://wiki.documentfoundation.org/Documentation/Publications#LibreOffice_Writer_Guide
Printed copy (for purchase) is here:
http://www.lulu.com/content/paperback-book/libreoffice-60-writer-guide/23199200
Feel free to find all my mistakes and let me know!
Jean