Author
Philadelphia Record
2
United States. Bureau of Labor Statistics
2
Willits, Joseph Henry, 1889-
2
Clague, Ewan, 1896-1987
1
Community Council of Philadelphia
1
Dewhurst, J. Frederic 1895-1967
1
Forty Plus of Philadelphia
1
Joint Committee on Research of the Community Council of Philadelphia and the Pennsylvania School of Social Work
1
Leeds, Morris Evans, 1869-1952
1
Lehman, J. David, 1956-
1
Loucks, William N. 1899-
1
Nathan, Robert R.
1
Philadelphia Chamber of Commerce Industrial relations committee
1
Philadelphia Dept. of Public Works
1
Wharton School. Industrial Research Department
1
Young, Arthur H.
1