Multi-year Training (Read 39 times)

I'm looking for some thoughtful writing on training and racing over a period of years.  I've run a marathon a season since Fall 2011 and I have for the most part trained in organized club programs that have had an idea about how to put it together over months for a goal race.  But, I still feel like I have unfinished business on the course & would like to learn more about using the whole year or years wisely.  I haven't read any of the big books on marathon running so a recco of one of those would be welcomed.