The Justice League Timeline Prior to the New 52

Thanks to the decades worth of continuity for DC Comics, it became pretty hard to track down or at the very least understand the changes that have happened to the Justice League/ Justice League of America. Luckily for us, Comicvine had the time and the manpower to create an infographic featuring the entire Justice League timeline until the start of the New 52 in 2011. 

I apologize this being rather small but I'm sure you can zoom in the chart to the point where you actually understand what's written on it.