While several numbers are associated with every issue in this series most of them only appear on the publisher's order forms. Issue numbers here have been established from the publisher's house ads on the inside back covers, from the publisher's order form, and from the known release dates. It is possible that the printing order is different somewhat. These graphic novels were never intended for sale outside of the academic community and were not distributed to bookstores or comic shops. Some online retailers, Amazon in particular, carried some of the issues.