Are versions of the posters of WEAAD at http://www.inpea.net/weaad/weaadposters.html available in a format other than .pdf?
No. Only .pdf versions are available for the posters that originally came from City College of San Francisco. It was a class project from there several years ago that they forwarded to INPEA, who does not have the originals. Since then, INPEA web has taken the .pdf’s and updated the year with the closest font that matched. As a suggestion, the .pdf can be opened and modified using photo editing software.