Exhibit 1.1(b) Nuveen Unit Trusts, Series 73 Trust Indenture and Agreement Dated: December 15, 1999 This Trust Indenture and Agreement by and between John Nuveen & Co. Incorporated, as Depositor and The Chase Manhattan Bank, as Trustee, sets forth...Trust Indenture and Agreement • December 15th, 1999 • Nuveen Unit Trusts Series 73
