Curtis said the film squeezed nine movies into one, allowing him to bring in some of Britain's brightest TV talents including Teachers' AndrewLincoln and Martin Freeman from The Office.
Two other heroes are Harrison Reed and Ossian Hart, governors who ruled during the so-called congressional Reconstruction that briefly overturned the racist regimes installed under Andrew Johnson after Lincoln's assassination.
Andrew Johnson, who ascended to the presidency after Abraham Lincoln's assassination, was tried and acquitted in the last presidential impeachment trial 131 years ago.
The only time in history that's ever happened was 1864 when Abraham Lincoln picked the Democratic - former Democratic governor of Tennessee, Andrew Johnson.
The production, led by directors John Tiffany and Andrew Goldberg, originated at the National Theatre of Scotland and made a stop last summer in the Lincoln Center Festival.