Over time, I intend to write some material that I’ll definitely reference these maps in. Here’s a fairly high resolution image of Portland and its respective boundaries.
Portland & Boundaries, Highest Resolution. Click to get a full size image.
Portland again, with clearly marked border lines. Click for larger image.
Portland, focused on northern segment. Click for full size image.
Portland, focused around the southern areas. Click for full size image.
There are more where this came from that I’ve sliced and diced on my Smugmug.
Transit Sleuth 