The exhibition was grand in scale and lengthy in preparation, with an initial $5 million committed by the city of St. Louis through the sale of city bonds was authorized by the Missouri state legislature in April 1899. An additional $5 million was generated through private donations by interested citizens and businesses from around Missouri, a fundraising target reached in January 1901. The final installment of $5 million of the exposition's $15 million capitalization came in the form of earmarked funds that were part of a congressional appropriations bill passed at the end of May 1900. The fundraising mission was aided by the active support of President of the United States William McKinley, which was won by organizers in a February 1899 White House visit.