Columbia University [Man pouring a solution over a fire.]

Columbia University [Professor working with bright light.]

Columbia University [Sculpture professor.]

Columbia University [Sculpture professor.]

Columbia University [Sculpture professor.]

Columbia University [Sculpture professor.]

Columbia University [Sculpture professor.]

Columbia University [Professor teaching a class.]

Columbia University [Professor teaching a class.]

Columbia University [Professor teaching a class.]

Columbia University [Professor teaching a class.]

Columbia University [Professor teaching a class.]

Columbia University [Professor teaching a class.]

Columbia University [Professor teaching a class.]

Columbia University [Professor teaching a class.]

Columbia University [Professor teaching a class.]

Columbia University [Professor teaching a class.]

Columbia University [Professor teaching a class.]

Columbia University [Professor teaching a class.]

Columbia University [Professor teaching a class.]