- AEGON Institutional Markets
- AllianceBernstein
- Alston & Bird LLP
- American Municipal Power-Ohio
- American Public Gas Association
- American Public Power Association
- AMP-Ohio
- Assured Guaranty
- Avant Energy
- Ballard Spahr Andrews & Ingersoll, LLP
- Banc of America Securities LLC
- Bank of America
- BNP PARIBAS
- Bob Cat Gas Storage
- Bond Logistix LLC
- BP Gas & Power, North America
- California Alternative Energy and Advanced Transportation Financing Authority
- CIFG
- Citi Global Commodities
- Citigroup
- City Utilities
- Clarke Mobile Counties Gas
- Colorado Springs Utilities
- CPS Energy
- Deutsche Bank
- Dow Hydrocarbons & Resources
- Eaton Vance
- FGIC
- Fidelity Investments
- Fitch Ratings
- Franklin Templeton Investments
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- Fulbright & Jaworski LLP
- Gainesville Regional Utilities
- George K. Baum & Co.
- Goldman, Sachs & Co.
- Grand River Dam Authority
- Hunton & Williams LLP
- Indiana Bond Bank
- Invesco Worldwide Fixed Income
- JB Hanaurer
- JP Morgan
- Kutak Rock LLP
- LDH Energy
- LEHMAN
- Lehman Brothers
- Lloyd Gosselink
- Locke Lord Bissell & Liddell LLP
- McKee Nelson LLP
- Merchant Capital
- Merrill Lynch Commodities
- Midwest Consortium of Municipal Utilities
- Moody's Investors Service
- Morgan Stanley
- Municipal Energy Resources Corporation
- Municipal Gas Acquisition and Supply Corporation
- Municipal Gas Authority of Georgia
- MuniGas
- Nationwide
- Nixon Peabody LLP
- Ohio Air Quality Development Authority
- Oppenheimer Funds
- Orrick, Herrington & Sutcliffe LLP
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- Peck, Shaffer & Williams LLP
- Putnam Investments
- RBC Capital Markets
- Sacramento Municipal Utility District
- San Francisco Public Utilities Commission
- Seattle-Northwest Securities
- Siebert Brandford Shank & Co. LLC
- SourceMedia
- Standard & Poor's
- Stern Brothers & Co.
- Sutherland Asbill & Brennan LLP
- Tenaska Marketing Ventures
- Tennergy Corporation
- Texas PUC
- The Bank of New York Mellon
- The Bond Buyer
- The Energy Authority
- The Lower Alabama Gas District
- Toyota Tsusho America, Inc.
- UBS Securities LLC
- US Bank
- Vinson & Elkins LLP
- Virginia Resources Authority
- Wachovia
- Wellington Management Company, LLP
- Wells Fargo
- Wells Nelson & Associates
- XL Capital Assurance
- Ziegler Capital Management
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