Columbia University [David Anderson, Columbia psychology lecturer, experiments with a rat to teach it to pull a chain and get food.]
Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with rat to teach it to pull a chain and get food.]
Columbia University [David Anderson, Columbia psychology lecturer, tries a simple experiment with a rat to teach it to pull a chain and get food.]
Columbia University [Professor teaching a class.]
Columbia University [Women learning cooking techniques.]
Columbia University [In one year, Columbia professors wrote this many books.]
Columbia University [Man reading in a library.]
Columbia University [Coach Gus Peterson demonstrating wrestling techniques.]
Columbia University [Man studying in a library.]
Columbia University [Carl Merner, track coach, with runners.]