For nearly a century, the paper for US paper money was (and still is) supplied by a single source, the Crane Paper Company. The U.S. Bureau of Engraving and Printing (BEP), wanted to develop a second, or back up source. In 1963, the Gilbert Paper Company of Menasha, Wisconsin, together with Hobson Miller Paper, obtained a contract with the U.S. Bureau of Engraving and Printing to supply test paper for money to be printed in the US. The proper paper was developed, and the BEP subsequently produced $1.00 bills using this Gilbert test paper. Approximately 640,000 notes were produced, and most were put into regular circulation. Many notes were given to Gilbert and Hobson Miller employees and others as souvenirs. If you have one (or more) of these notes, I would like to buy one. The notes were given out with a souvenir cover. TOP DOLLAR PAID. If you have one, I can meet in your area and pay cash.