Vintage Motocross Mags 1970-2000

Have a very large collection of various mx magazines looking to sell to enthusiasts and collectors. Collection is large enough that locating a particular issue would be time consuming but not impossible. Issues include: Pop cycling, mxa, dirt rider, dirt bike, cycle news, mx west, fresh dirt, motocross illustrated, motocross, cycle world, racer x. Most are in excellent condition. Please advise the best way to do this. These are some amazing historical volumes! Advice??