Cancelled check in the amount of $7.2 million, for the purchase of Alaska, issued August 1, 1868; Records of the Accounting Officers of the Department of the Treasury; Record Group 217; National Archives.

With this check, the United States purchased Alaska from Russia for $7.2 million. For less than 2 cents an acre, the United States acquired nearly 600,000 square miles.

The check was made payable to the Russian Minister to the United States Edouard de Stoeckl, who negotiated the deal for the Russians.

Link (with larger pic)