Historical Model Data/Maps

[OSUWx2]

For years now, I've been on the hunt for historical data/maps for the major models (GFS, NAM, Euro, etc.) going back 10-15+ years. I am interested to go back and review how models performed for big winter storms. And honestly, just to relive those fun model runs immediately preceding big storms. 

I've done many Google searches, but have had no luck finding anything:

1. Do the agencies that maintain/run the models keep historical data/maps?

2. If so, is it free and accessible to the public?

3. If so, where and how? 🙂