Southwest of the wooden tower is a telephone pole. The next Clue Bottle rests on top.
Head northwest form here as if you were returning to the hideout. A Clue Bottle rests on a ledge facing that direction.
Cross the wire north of here to find another bottle on a rock.
A little further north is a group of wagons, one of which holds a Clue Bottle on its top.
The narrow path southwest of the wagons holds another bottle atop some small ledges.
Return to the wires you crossed a moment ago and head north. A Clue Bottle waits on a roof just up ahead.
Continue along the wires to spot another bottle on a ledge.
You'll have to ride the train and have Sly's Jailbird costume unlocked for this one. Hop aboard the train and leap from the roof to reach the high ledge marked for this Clue Bottle on the map. Use the ball and chain to knock the crate back, and use the crate to hop up the ledges where this Clue Bottle awaits.
The train tracks split in the northeast area of the map. Head there to find a ledge you can climb to. There's another bottle up here.
On the opposite side of the forking tracks is a green covered bridge. Hop on the roof to find another Clue Bottle bobbing on a wire.
Look down and southeast from Clue Bottle #28 to see this one on a lower ledge.
Move through the second covered bridge to find the final Clue Bottle under an awning.
You can now unlock the Safe - found near Clue Bottle #11 - to get Muggshot's Coin, which increases loot drops.