See also: http://www.slate.com/blogs/browbeat/2012/11/21/lincoln_sound_design_watch_a_video_about_how_they_got_the_historical_sound.html
A long, fascinating video interview with the foley guy Ben Burtt, with some sound effects and video clips to illustrate how they used actual recreated sounds from the era. (That is, sounds recorded with doors and whatnot that Lincoln actually used.) - Jed
