At the southeast tower, the Cigarette Card for San Francisco can be found on the windowsill. In the corner nearby is a lockbox containing a Health Cure, money, regular Repeater Cartridges, and the Special Horse Medicine Pamphlet.
Southwest of the fort a big log can be found by the river. By this is a lockbox containing Bitters, a large jewelry bag, and a Silver Pocket Watch.
Gator Eggs can be found northwest of the fort and across the river.
Moccasin Flower Orchid can be found north and slightly east along the riverbank.