Dn/Scn tech and when it was published? Been researching some stuff on Dianetics/Scientology tech but you know how it is, even if you go to the source you can't be sure it hasn't been revised and changed. What I'm looking for explicitly is a list of the various things (courses, materials etc) and the DATE THEY WERE FIRST CREATED. For example, xenu.net has a great grade chart here ~~> http://www.xenu.net/archive/grade_chart.html but none of it is dated. The pdf of OT level material that went up on wikileaks is for the most part dated, but it'd be nice if there was somewhere that confirms this?