American Accessories Collection. Billy Moore, the man behind Cause and Effect isn't your typical craftsman using traditional techniques. Billy is an artist working with metal, leather, and nature to create interesting colors, textures, and designs. It's not unusual to see him out behind his cabin in Tennessee, waist deep in the river conditioning his leathers or even slamming metal against a boulder to shape a piece. As a result, no two pieces are identical, which is why Billy hand signs every leather piece he makes.