The archive started out as purely a historical reference library for those at the beginning but now it has evolved into something else entirely. It is now more of a definition as opposed to the journey we took.
It has existed in many different incarnations. It started as hard carved cuneiform tablets from there to papyrus with carbon or soot for ink powder. After that came paper with various different inks and quills to eventually be supplanted by the modern day ballpoint pen. And now comes the age of the computer where information is just stored as ones and noughts.
Over the millennia the archive has been added to, modified and retranslated many times. Much has been lost in translation and much has just been lost every time the archive was moved from one medium to another. It is now but a shell of its former self containing fragments of past and future histories.
Riddles of time are to be found within its now simulated walls, layered thick in voids of the lost.
The main structure of the archive has always remained the same since its initial design by the architect at the beginning, he has since moved on.
All histories have holes and some histories are defined by those holes, search for the missing component.
Janus is the God of Beginnings and also gates or doors, the irony is that whilst the archive contains no doors it does contain many locks. There are however many beginnings it is but the nature of history.
All three paths have a guide, two are aware of their responsibility one is not. The names are embedded in their domains however each guide's abode is probably obscured in some way. All three will probably try and avoid helping you do not take 'No' for an answer.
Use their services well.
Guides are almost useless outside of their domains.