Posted by Rallaz on Jan 22, 2012; 9:32am
URL: https://forum.librecad.org/Where-are-big-samples-tp5162406p5163826.html

big and small assorted DWGs:
http://cben.net/

DGN files:
http://dgnlib.maptools.org/dl/dgnsamp.zip

A good manual for GIT:
   http://www-cs-students.stanford.edu/~blynn/gitmagic/book.pdf

Online version, other formats, translations, source code, etc.
   http://www-cs-students.stanford.edu/~blynn/gitmagic/