The palette
The river is the backbone of this sheet: choose an ink that holds both its broad reaches and its narrow passage through the centre, where the bridges cross it. Green has real work to do here, on the wooded hills to the west, on Ross Island, in the circle and diamonds of Ladd’s Addition and along the waterfront; a green with some depth keeps the hills readable without any relief. The bridges are drawn as roads, so a street line dark enough to carry them over the water keeps each crossing distinct.