The University in action : from the annual reports 1902-1935, of Nicholas Murray Butler, President of Columbia University ; edited, with an introduction, by Edward Charles Elliott

The later days of old Columbia College : from the annual reports of Frederick Augustus Portar Barnard, President of Columbia College, 1864-1889 ; edited by William F. Russell ; with an introduction by Nicholas Murray Butler

Barnard, Frederick Augustus Porter, (1937)

The rise of a university

Barnard, Frederick Augustus Porter, (1937)

Estimating Search with Learning

Koulayev, Sergei, (2008)