Author
Newcomer, Mabel, 1891-1983
2
Adams, Thomas Sewall, 1873-1933
1
Barnett, George Ernest, 1873-1938
1
Benton, Elbert Jay, 1871-1946
1
Boyce, Warren Scott, 1878-
1
Brough, Charles Hillman, 1876-1935
1
Columbia University. Council for Research in the Social Sciences
1
Edmonds, Franklin Spencer, 1874-1945
1
Fox, Leonard Peter, 1889-
1
Hollander, Jacob H. 1871-1940
1
Mort, Paul R., 1894-1962
1
Pennsylvania Chamber of Commerce
1
Pennsylvania Tax commission
1
Schmeckebier, Laurence F. 1877-1959
1
Thompson, Robert Ellis, 1844-1924
1