Riis's first team soon tired of the late hours, and Riis had to find other help. Both his assistants were lazy and one was dishonest, selling plates for which Riis had paid. Riis sued him in court successfully. Nagle suggested that Riis should become self-sufficient, so in January 1888 Riis paid $25 for a 4×5 box camera, plate holders, a tripod and equipment for developing and printing. He took the equipment to the potter's field cemetery on Hart Island to practice, making two exposures. The result was seriously overexposed but successful.