How do I get Wood/Iron/Sulfur/Saltpeter?

1. Purchase these (up to 3 goods) from the Merchants Guild for stated cost. 2. Tend a Sulfur Mine to get Sulfur when Mine is established or during dawn of Epoch replenish landscapes step. 3. Pilfer 1 good when taking the Move action. 4. Take farming kickbacks during Harvesting. 5. Playing certain Royal Writ Mandate(s). 6. Discard a Landscape tile from your supply to take 1 good of your choice. 7. When an opponent's Serf decides to take all sulfur from his sulfur mine in a location you rule, he pays you one sulfur.