Northern Spy is another venerable apple, discovered south of Rochester, New York, around the beginning of the 19th century as surviving sprouts of a seedling that had died. Wagener is believed to be one of its forebears.
Northern Spy is a late-season apple with a red blush over a yellow-green skin and yellowish flesh. It holds its shape and flavor in cooking and is ideally suited in texture and taste for many processing uses, including slices and sauce. Processing is the primary utilization of Northern Spy currently, although some apple fans can't get enough of the variety for fresh eating. 

Apples come in various grades: Extra Fancy, Fancy, and No.1. The top two grades of apples are based on exterior appearance and size.  Apples should be stored at 31 to 32 degrees F at 85-90% relative humidity. Keep them in their boxes as they can absorb odors, and they give off ethylene gas that can hasten ripening in other fruits and vegetables.. Apples come packed in 38-42 # cartons, and 40-45# tray packs with  counts of 48, 56, 64, 72, 80 ,88, 100, 120, 140, 160,  200 or 216 for the smallest.  One medium apple  equals one cup diced apples.

Apple information can be found at this link:
http://www.MichiganApples.com/northernspy.html


Some great Apple recipes: http://www.epicurious.com/b_ba/b02_twelve/apple/ba_12apples.html