In the first ruins you come across. Climb up at the side.
#34 Eroded Flintlock Pistol
There is a cave behind a waterfall before you reach the bridge. Get in, pull the box and use it to climb up to the treasure.
#35 Mughal Ivory Powder Flask
In the tower with the dragon symbol. At the top.
#36 Parchment Scroll
After the first tower with the winch, these are the first ruins you come across. The treasure is on the box.
#37 Ancient Fertility Idol
When you follow the road, you'll see a rock with a hole. Sam will say: Nate, check out that cave. Climb inside.
#38 Pocket Celestial Map
After the hostile area, in the second valley, there is a ruined house up the road.
#39 English Ale Bottle
In the third valley, the one with the big tower, there is a house to the left. Right at the start of the valley.
Drive the car to the wall, so you can climb it. Blow off the roof and climb inside.
#40 Pewter Letter Cylinder
Drive towards the tower, you should see ruins and a well next to the road/path. Climb down the well and take the winch with you. Attach it to the pillar to be able to climb up a little chamber.
#41 Mughal Box
Before you reach the next hostile area in the top left, drive up the hill on the left side. There are some ruins.
#42 English Musket Bandolier
In the second hostile area, below the big tower, there is a barricaded entrance in the center of the area. Blow it up and climb down.
#43 Antique Tea Tin
Another hostile area at the bottom of the volcano. This one with a big door. Blow it up to get to the treasure.
#44 Scottish Two Pence Coin
On top of the lookout tower.
#45 Scottish Snuff Mull
Outside of the 3rd (big) tower, before you go in. It is sitting on some crates.
#46 Brass and Ivory Tankard
After opening the gate with the crank in tower 3. In the next room with the staircase. The treasure is behind some boxes.
#47 Muff Pistol
Same room as 46. Destory the crates in the corner.