The United States issued its first postage stamps in 1847. Before that time, the rates, dates and origin of the letter were written by hand or sometimes in combination with a handstamp device. Since enactment of the Postal Reorganization Act of 1970, postage rates have been set by the Postal Regulatory Commission.
The celebrity appeal is not hard to appreciate. Encompassing an area about the size of Rhode Island, Muskoka is clustered around three big lakes -- Muskoka, Joseph and Rosseau -- that are carved into the Canadian Shield and framed by a dense canopy of hemlocks, pines and maples.
The Sanshan Islands of Tai Hu Lake, China, are also examples of impact crater islands, as are the islands in Canada's Clearwater Lakes, and the Slate Islands of Lake Superior, also in Canada. SollerÃ¶n Island in Siljan Lake, Sweden, and an unnamed island in Lake Karakul, Tajikistan, was also formed by meteor impact.