Author
Goldfarb, Israel, 1879-1967
2
Gorelick, Joseph
2
Lutzky, A., 1894-1957
2
Shapiro, Morris
2
Syrkin, Nachman, 1868-1924
2
Unger, Menasheh, 1899-1969
2
Workmen's Circle (U.S.) Philadelphia District Educational Department
2
Unterman, Isaac
1
Workmen's Circle (U.S.) Philadelphia District
1
Workmen's Circle (U.S.). Philadelphia District
1
Workmen’s Circle (U.S.). Philadelphia District
1
YIVO Institute for Jewish Research
1
Yidisher ṿisnshafṭlekher insṭiṭuṭ
1