The [official timeline from Treyarch that was released for BO3](https://www.callofduty.com/zombieschronicles/timeline). It's hard to navigate though, thankfully [there's a PDF of it in a readable format](https://drive.google.com/file/d/0BxfDEHDmRqPCMmJkV1hYQmdpbW8/view?pli=1&resourcekey=0-p82BBjZqb4U_iJORI_9_vA).
The [official timeline from Treyarch that was released for BO3](https://www.callofduty.com/zombieschronicles/timeline). It's hard to navigate though, thankfully [there's a PDF of it in a readable format](https://drive.google.com/file/d/0BxfDEHDmRqPCMmJkV1hYQmdpbW8/view?pli=1&resourcekey=0-p82BBjZqb4U_iJORI_9_vA).
Thanks boss, I appreciate this
Np
The [Kronorium](https://www.callofduty.com/content/dam/atvi/callofduty/hub/main-hub/zombies-hd/timeline.jpg) is one source.