This is a boxed set of 4 NeXT Computer Software Manuals
It contains the manuals on:
The covers look like they have browned a little with age but when I flipped through them, all manuals look to be in good shape, no marks that I see.

This does come with the box shown in the pictures.

These are extremely rare.  The User Reference and Application manuals were more common.  These Dev Tool manuals are very hard to come by. 



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