Lumbermens Mutual Group, formerly known as Kemper Insurance Company (or just as Kemper), is comprised of Lumbermens Mutual Casualty Company, American Motorists Insurance Company, and American Manufacturers Mutual Insurance Company. These Kemper Entities sold property and casualty insurance policies throughout the 1980s and into the 1990s, covering (among other things) liabilities arising from long-tail, toxic tort claims such as asbestos and environmental exposures. They are now in insolvency proceedings and important deadlines for perfecting claims against them are fast approaching.