From Introduction: The Resource Catalogs on the following pages are a useful tool, especially if you are running a campaign that does not feature a static Stronghold. Each location has its own catalog to make purchases from without having to bring Resource back to the Stronghold. Alternatively, you can add any of the objects you find (based on your ‘Per - Search’ check’s DoS) to your Stronghold Resource Catalog upon returning from a mission where the location was searched. In this case, add the item and note its Degradation (generally an number between 1 for comon and 6 for rare) to see how many times such an item could be purchased before a new location has to be raided to add it to the Stronghold Resource Catalog again.