His education continued at Columbia where , in 1935 , he earned another master 's degree and a Ph. D in 1941 .
In 1933 he received a Master of Science from Columbia University 's Graduate School of Journalism .
His education continued at Columbia University where , in 1935 , he earned another master 's degree and a Ph. D in 1941 .
In 1933 he received a Master of Science from Columbia University 's Graduate School of Journalism .