After a decade-ish hiatus from reading comics, I've recently started reading again. (Marvel Unlimited was the greatest birthday gift ever!)
Before stopping, one of the last arcs I had read was the Origin story of Wolverine. At the time, Wolverine had no current memory of any of the events and had no idea of his real name.
Cut to today. In one of the recent issues, one of the other X-Men referred to Wolverine as "James" (I believe it was in one of the early issues of Wolverine & The X-Men). More recently, Wolverine's brother, has shown up. Wolverine seems to know everything Dog is talking about, indicating that he has many, if not all of his memories of the Origin events.
When/How did Wolverine learn about his past or recover these missing memories?