Jazz Forum, based in Warsaw, is the magazine of the International Jazz Federation, set up by an enterprising Polish bass player, Jan Byrczek. In its heyday in the late 1970s Jazz Forum appeared in Polish, English and German editions, had active correspondents and contributors on almost every continent, and was distributed in 103 countries. Jazz Forum is still published quarterly: http://jazzforum.com.pl/
You can read an archive of the English language version from 1974-1992 here: https://archive.org/details/pub_jazz-forum
