EDN is online only back to about 1996 or so. Electronic Design keeps much less online, perhaps a year or two. IEEE Computer keeps the whole shebang online--you need to be an IEEE CS member to access the content however. Some of the old 1970s-vintage stuff is a lot of fun to read--and is often a way to research a now-forgotten product or company. Nothing like reading about things when they were happening; not at all like relying on (ahem) some gray-haired guy's faulty memory of events. Cheers, Chuck