Current Attempt in Progress On November 1, 2020, Robert L. Carroll Paleontology Museum Inc. issued $152,000,000 in 13 % bonds, with interest payable on April 30 and October 31 each year. The bonds were issued at a price of 106.14 and had a maturity date of April 30, 2040. The interest expense for the first payment on April 30 is $9,817,101. The company's fiscal year end is October 31.