Use Bloomberg in the Margolis Market Information Lab(MIL) at the Business Instructional Facility(BIF)
Use the GOVT or CORP yellow sector keys. To Search by Issuer:
Ticker Symbol (This will list all bonds issued by the equity. Choose a specific bond for more information.)

To search for specific bond:
Ticker Symbol Coupon Rate Maturity

Example: IBM 5.4 01/26/09 For yield curves; type FMCI
 

Yield Curve Analysis with Bloomberg (available in the Margolis Market Information Lab (MIL) at the Business Instructional Facility (BIF))

• Type YCRV for evaluating yield curves.

Use WRDS, available through Business Information Services.

• Select the dataset CRSP for monthly government bonds.

To inquire further please contact: bis@library.illinois.edu

Also try the following:
Yahoo Finance--Bond Screener
Money.cnn--Bonds and Rates
Investing in Bonds
Treasury Direct