The 1995 tax records, never before disclosed, reveal the extraordinary tax benefits that Mr. Trump, the Republican presidential nominee, derived from the financial wreckage he left behind in the early 1990s through mismanagement of three Atlantic City casinos, his ill-fated foray into the airline business and his ill-timed purchase of the Plaza Hotel in Manhattan.Tax experts hired by The Times to analyze Mr. Trump’s 1995 records said tax rules that are especially advantageous to wealthy filers would have allowed Mr. Trump to use his $916 million loss to cancel out an  equivalent amount of taxable income over an 18-year period.