Where can I find data on corporate or municipal bonds?
Two important sources for bond information are:
Mergent BondViewer - search by CUSIP, Issuer Name or Ticker, Issuer Industry, etc. Includes municipal bonds.
S&P NetAdvantage - click the Companies tab, then select Bond Screener on the left-hand side to search for corporate bonds by Issuer or CUSIP. You can also screen for bonds by additional criteria such as bond rating, yield to maturity, or coupon rate.