In season 1 episode 9 of Severance, Irving's innie finds a box/trunk in his outie's closet
with what seems to be his dad's uniform (along with a picture of his dad). He then finds a compartment underneath that has multiple documents. One is a newspaper clipping of a man suing Lumon to get more information of a workplace injury; this is Irving's dad, correct?
Another document is
a list of employees with notes on them. Was this a document acquired by his dad for the lawsuit? Or was Irving doing his own investigation into Lumon to find out what happened to his dad? Were the documents in the box there because he was hiding them from somebody? Or because he had become disillusioned with his own investigation?
A third document is
a map that has a few names written on it (including Burt's), indicating where each of these people live. Why?
In short: what is the context of these documents? (I'm guessing some/most of this context will be revealed, in future seasons.)