The Spectator, which bills itself as “the oldest continuously published magazine in the English language,” has put online its archives, dating back to its inception in 1828. The Spectator is a relatively small-circulation, conservative-oriented publication in the United Kingdom.
This is not strictly a law-related matter, of course; but general research sources are worth noting and bookmarking for a possible future legal use when they are of this historical depth. And from a brief trial run I can say that it seems that the magazine has done the archiving very well indeed, with text items digitized and also made available in the original format. As well, search results can be filtered by date, key word and subject facets. Or, if you feel more like a read, you can browse the magazine by issue. The brief introduction to the archive is available here.