Penguin Companion To World Literature McGraw Hill Set Box Set Decor Pieces Books

Penguin Companion To World Literature McGraw Hill Set Box Set Decor Pieces Books Box set of vintage books with damage to the box itself, overall in OK/readable condition. They do have some staining and a bit of tackiness but should be able to be cleaned up with a book cleaner. I tried with a very slightly damp paper towel and it did not work and I didn't want to risk any further damage. Please see photos.