What is the relationship between interest rates and the length of time to maturity? Figures 13.1 through 13.3 give various yield curves for U.S. Treasury securities. What is the current yield curve for U.S. Treasury securities? Possible sources for the answer to this question are Bloomberg (www.bloomberg.com under Market Data: Rates & Bonds) or the TreasuryDirect (www.treasurydirect.gov under the section on access data).