Richard Sylbert Interview
Here's one of the best production designers in Hollywood history talking about his work for Chinatown.
https://www.youtube.com/watch?v=OEhsHkCUY2k
I also thought that I'd add Lincoln and Avatar production designer Rick Carter discussing Richard Sylbert and his work on the film.
http://www.adg.org/?content=videos&Vcategory=ADG+Awards&Vsection=ADG+TV&theme=art_combined&Vid=1193804486&PLAY=1
Both interviews are very insightful into this aspect of film-making.