Welcome to Just Answer and thanks for your question. There were thousands of anaonymous contributors funding all the superpacs. The biggest contributor to Gingrich's was Las Vegas casino tycoon Sheldon Adelson. His business address is c/o Las Vegas Sands Copr., 3355 Las Vegas Blvd South, Las Vegas, NV 89109. He has no published telephone or email address to protect his privacy and that of his family.
Sarah Palin has several contact options:
Office of Sarah PalinPO Box 871235Wasilla, AK 99687