...nd. From Colonel William Allan, of Baltimore (former Chief of Ordnance, Second Corps, Army of Northern Virginia)--Two papers on the battle of Gettysburg-valuable additions to our series. From Robert Clarke & Co., Cincinnati--The Washington-Crawford letters concerning Western lands, arranged and annotated by C. W. Butterfield. From R. M. J. Paynter, Esq., of Richmond--The loan of files of telegr...