Thank you for viewing. I am selling these items to organize my collection. I hope to pass them on to someone who is looking for them. They have been stored in a dark place. There are no folds, stains, or tears, and the condition is good. Please purchase with the understanding that these are used books. Armor Modeling 1999-2000 Issue 17, Issue 18, Issue 19, Issue 20 Set of 4 Immediate purchase is welcome. No individual sales. Anonymous delivery. I am also selling other issues, so please take a look at those as well. I am sorry, but I cannot answer questions about the contents as these are items requested by my family. Thank you for your consideration.