We currently do not know how often these were issued, i.e. monthly, quarterly, semi-annually or yearly. We know "poster catalogs" were also issued at least yearly. These show available posters and "product codes" (Nike numbers) . We currently have the Sept 1988, Sept 1989, June 1990, Jan 1991 and Jan 1992 catalogs which have been a great help especially for the type 4 poster cards.
Nike Poster order form June 1990
Anyone having order forms previous to June 1990 please contact us.