The external website of the U.S. National Security Agency (NSA) has some publicly released issues of Dragon Seed, an in-house Asia/China publication dating from the early 1970s. Although heavily redacted, these issues contain material of interest to more than just cryptologists. The March 1972 issue, for example, includes an article on "The Strategic Importance of Shenyang Military Region." Here is the link:
Thanks to Greg Nedved for bringing this to the editor's attention.