Yes I do one is in Colo Springs where armadillo is at Hanging Rock and the other is in Tumble weed but if you hear guns shooting that is a good way to find the treasure hunter and he will give you the first map

Train wreck west of Cortorra Springs - 2 gold bars.

Limpany - 1 gold bar.

To get the Jack Hall Gang treasure, you have to find a treasure hunter stranger mission near Flatneck station to get the map. After that you have to find the other maps

2nd map - Caliban's Seat

3rd map - Cortorra springs

The third map leads you to the small island in O'Creagh's Run containing 2 gold bars.

Poisonous trail map - Lockbox in Cairn Lodge

2nd map - Inside a dead tree in Face Rock

3rd map - Inside serpent mound west of Van Horn

The third map leads you inside the waterfall of Elysian Pool. Go down the slope to your right and into a small tunnel. In the tunnel, you'll have to choose a path (the right path is the correct one). Afterwards, you'll come out to see a pit, if you look to the left, below you is a platform that you have to jump on. Once you land on the platform continue forwards and you'll find 4 gold bars.

There’s a gold bar under the sheriff’s desk in Limpany. Easiest and quickest money in chapter 2. You have to go to the Rhodes or Saint Denis fence to sell it though as the one in Emerald Ranch first unlocks after doing the mission there with Hosea.

You’ll also get a gold ingot after returning the German man to his family at the end of Chapter 2.