Where are all the Truth signs in assassins creed 2

This guide tells you the location of each glyph as well as how to solve the Truth Files in order. Note: You don't have to get the glyphs in this order, the Truth files will be in the same order no matter which glyph you find.

http://mycheats.1up.com/view/section/3170852/27934/assassin_s_creed_2/xbox_360
http://mycheats.1up.com/view/section/3170852/28004/assassin_s_creed_2/xbox_360