Incoming Resources
- Ziff-Davis Pub. Co., New York, 1960
- Ziff-Davis Pub. Co., Chicago, Ill., 1943-
- Ziff-Davis Pub. Co., New York, 1957-59
- Ziff-Davis Pub. Co., New York, -c1994
- Ziff-Davis Pub. Co., New York, c1961
- Ziff-Davis Pub. Co., New York, c1979
- Ziff-Davis Pub. Co., Chicago, 1947
- Ziff-Davis Pub. Co., New York, NY, c1988-c2000
- Ziff-Davis Pub. Co., New York, N.Y., c1982-1985
- Ziff-Davis Pub. Co., Chicago, 1939
- Ziff-Davis Pub. Co., New York, 1961
- Ziff-Davis Pub. Co., New York, c1978
- Ziff-Davis Pub. Co., New York, N.Y., c1981-
- Ziff-Davis Pub. Co., Chicago, 1948
- Ziff-Davis Pub. Co., Chicago, c1949