Sino-Platonic Papers has just released one of its popular back issues as a free PDF. This one, no. 19 (June 1990), deals with the common question of What’s up with that “Peking” spelling, anyway?

As Bosat Man explains in “Backhill / Peking / Beijing”:

The three main contributing factors to the discrepancy between Peking and Beijing are:

  1. a plethora of romanizations
  2. a welter of local pronunciations, and
  3. phonological change over time.

He then goes into detail, especially about the third point. The whole work is just six pages, single spaced. Here it is: “Backhill / Peking / Beijing” (1 MB PDF).