There is a new mailing list for people researching IWANICKI and other variations of the name. It is by rootsweb.com . You can subscribe to your list in mail mode by sending a message to
IWANICKI-L-request@rootsweb.com that contains the word SUBSCRIBE in the subject line and body. And nothing else.
If you prefer digest mode, you should send the command instead to
IWANICKI-D-request@rootsweb.com.