Singing Christmas Tree upon the location. Since then, the singing Christmas tree concept has spread to Canada, the Philippines, South Korea, Switzerland and Sri Lanka. The most attended tree takes place in Knoxville, Tennessee, with 60,000 attendees in 2007. The first Christmas trees came to the United States in the 1740s from Moravian (now part of the Czech Republic) settlers. In 1851, the first commercial tree lot in the United States was set up in New York City. President of the United States Franklin Pierce set up the first Christmas tree in the White House in 1856. Artificial trees were first developed in
White House Card the normal White House card, President Warren G. Harding also signed a larger white card with no lettering, but with the presidential seal embossed in gold at the top. Herbert Hoover was the last president to sign and distribute the cards routinely to anyone who asked. Starting with the administration of President Franklin D. Roosevelt, the vast increase in the president's workload meant the cards were increasingly signed mostly for friends and political supporters. Signed White House cards by Franklin D. Roosevelt and Harry S Truman exist, but are less common than those of earlier presidents. President Dwight D. Eisenhower