Type	Name	Date
Indenture	Second Supplemental Indenture, between Williams Partners L.P. and The Bank ofNew York Mellon Trust Company, N.A., as trustee	11/18/2011
Credit agreement	Credit Agreement, by and among Williams Partners L.P., Northwest Pipeline GP and Transcontinental Gas Pipe Line Company, LLC, as co-borrowers, the lenders named therein, and Citibank N.A., as Administrative Agent	06/09/2011
Indenture	Indenture, between Williams Partners L.P. and The Bank of New York Mellon Trust Company, N.A., as trustee	11/12/2010
Credit agreement	Credit Agreement, by and among Williams Partners L.P., Northwest Pipeline GP, Transcontinental Gas Pipe Line Company, LLC, and Citibank N.A., as Administrative Agent	02/22/2010
Indenture	Indenture, between Williams Partners L.P. and The Bank of New York Mellon Trust Company, N.A., as trustee	02/10/2010