Exhibit 1.1(b) Nuveen Unit Trusts, Series 131 Trust Indenture and Agreement Dated: December 3, 2001 This Trust Indenture and Agreement by and between Nuveen Investments, as Depositor and The Bank of New York, as Trustee, sets forth certain provisions...Trust Indenture and Agreement • December 3rd, 2001 • Nuveen Unit Trusts Series 131
