If your to do list includes researching immigration records available at Ancestry.com, but you do not have a paid subscription, you are in luck this week. August 29 - September 5 is Free Access Week to immigration and travel records on Ancestry. This includes U.S. records plus international immigration records from a handful of other countries, including Germany.
One new record set that might be of particular interest to Polish-American researchers are Border Crossings: From Canada to U.S., 1895-1956. Many Polish immigrants in Canada eventually emigrated to the United States.
The link below will take you directly to the free search page: