What is on the DC Pre-crisis Timeline?
It’s extremely difficult to assemble a comprehensive list of all the old Golden, Silver, and Bronze Age comics. This is due to the fact that DC reprinted them in multiple formats over the years. That said, we’ve done our best to assemble all the important stories in these ages. All the stories that lead up to DC’s big event: Crisis on Infinite Earths. These comics cover all of the recommended stories from before that event.
We still consider most of these stories to be part of the pre-modern age, and doesn’t have much to do with current continuity. However, several elements here and there do related to current continuity, and the storyline of Crisis on Infinite Earths explains how the new continuity works and how all of the separate continuities fit together. There are probably still a lot of Golden and Silver age comics that are not included in this part of the timeline, but that is because they are less relevant to current stories.
Note: Additionally, release dates are of the release of the paperback, not the original comics. Though many of these stories happened before 1985, the trade paperbacks were only released more recently, and so the release calendar can be quite confusing. Original dates are hard to come by.