"The Monthly Review, established in 1949, is an independent socialist magazine published monthly in New York City. The publication is the longest continuously published socialist magazine in the United States. [...] Monthly Review Press, an allied endeavor, was launched in 1951[.]"
List found in the end pages of the Modern Reader edition of Eduardo Galeano's 'Open Veins of Latin America: Five Centuries of the Pillage of a Continent'. This is in no way a comprehensive representation of MR's full catalogue, nor does it showcase its contemporary publications. In any case, if modern times don't get more folks paying attention to the issues that publications such as these focus on, nothing will, and they'll only have themselves to blame in the end.
P.S. Wonder how long it's going to take that R.L. troll to show up and skew this list as well.