For your consideration, here is a Lot of 5 Mac Wingate Series Paperback Books by Bryan Swift, numbers 4, 6, 7, 8, 10, published by Jove Books.  They all have wear and creases on the covers.  There is tanning on the pages and inside of the covers.  Number 10 has book store stamps on it.  They will be mailed in a box for protection.  Items pictured are the actual items up for sale and come from a non-smoking household.  (614.240x-1.12sc)

Here are the books with the number in the series, title, publishing information and number of pages:

4.  Mission Code:  Granite Island, First Jove Edition, December, 1981, 330

6.  Mission Code:  Snow Queen, First Jove Edition, February, 1982, 197

7.  Mission Code:  Acropolis, First Jove Edition, March, 1982, 199

8.  Mission Code:  Volcano, Jove Edition, April, 1982, 181

10.  Mission Code:  Survival, Jove Edition, June, 1982, 183