First Edition -- signed by all four authors along with an inscription written by H.L. Mencken -- of this centennial history of the venerable Baltimore Sun newspapers. Signed on the front endpaper by H.L. Mencken, Gerald W. Johnson, Frank R. Kent, and Hamilton Owens. Directly below the cluster of four signatures, H.L. Mencken has written an inscription to a previous owner and signed a second time. The very brief inscription is to a Baltimore book collector of the era. Maroon cloth with gilt decorations, 430 pages, illustrated. The book has a bit of foxing and soiling on the page edges. The dust jacket has edge wear including. several small chips and a bit of foxing on the back cover.