ftp.ntua.gr:/mirror/ctan/tds/?C=S&O=A 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] tds.sed                                          04-Jun-2004 20:11  404   
[TXT] README                                           15-Dec-2013 00:59  736   
[TXT] README.html                                      15-Dec-2013 00:59  736   
[TXT] Makefile                                         04-Jun-2004 20:09  1.2K  
[TXT] tds.aux                                          23-Jun-2004 20:25  4.5K  
[TXT] ChangeLog                                        23-Jun-2004 20:24  9.3K  
[   ] packages.zip                                     04-Apr-2004 04:35   14K  
[   ] tds2texi.el                                      04-Jun-2004 20:25   21K  
[TXT] tdsguide.cls                                     28-Mar-2004 17:21   24K  
[   ] tds.tex                                          23-Jun-2004 20:24   64K  
[TXT] tds.info                                         23-Jun-2004 20:24   66K  
[   ] tds.dvi                                          23-Jun-2004 20:25   87K  
[TXT] tds.html                                         20-Feb-2011 22:57   95K  
[   ] tds.pdf                                          23-Jun-2004 20:24  191K  

This is the TeX Directory Structure (TDS) document, describing a runtime
layout of TeX-related files intended to be portable,
implementation-independent, etc.  Most TeX distributions have adopted
this in some form.

If any questions, comments, or suggestions, email twg-tds@tug.org.
Mailing list archives available at: http://tug.org/mail-archives/twg-tds/

tds.tex is the master source file.  A few extra LaTeX packages that it
uses are in packages.zip, in the unlikely event that you don't already
have them.

http://tug.org/tds/ contains the current released version.  For older
versions, see ftp://tug.org/historic/docs/tds.  

Happy installing.