Entering Canada
Since June 2009, everyone from every country arriving in Canada by air, land and sea has needed a passport or equivalent travel document. (Some exceptions apply to children's passport requirements). Besides an up-to-date passport, visitors may instead have an equivalent travel document, such as a NEXUS Card.

Here is the link for your passport, http://travel.state.gov/passport/forms/forms_847.html

U.S. Persons - Prior to Departing the United States
If firearms or other high value items have not been registered with US Customs, stop at American Customs prior to entering Canada and complete Customs Form 4457.

Tip: Register Items Before You Leave The United States
If your laptop computer was made in Japan—for instance—you might have to pay duty on it each time you bring it back into the United States, unless you could prove that you owned it before you left on your trip. Documents that fully describe the item—such as sales receipts, insurance policies, or jeweler's appraisals—are acceptable forms of proof.

To make things easier, you can register certain items with CBP before you depart— including watches, cameras, laptop computers, firearms, and CD players—as long as they have serial numbers or other unique, permanent markings.

Fort Frances Immigration phone number - 807 274 9780

Fort Frances Customs phone number - 807 274 3655