Tex. Parks & Wild. Code Section 21.017
Evidence of Validity

21.001
Issuance of Park Development Bonds 21.002
Description of Bonds 21.003
Sale Price 21.004
Interest Rate 21.005
Form, Denomination, Place of Payment 21.006
Maturity 21.007
Redemption Before Maturity 21.008
Registered and Bearer Bonds 21.009
Notice of Bond Sale 21.010
Competitive Bids 21.011
Security for Bids 21.012
Approval of Bonds 21.013
Execution of Bonds 21.014
Facsimile Signatures and Seals 21.015
Signature of Former Officer 21.016
Bonds Incontestable, Valid, and Binding 21.017
Evidence of Validity 21.018
Payment by Comptroller 21.019
Duties Enforceable 21.020
Refunding Bonds 21.021
Bonds Negotiable Instruments 21.022
Bonds Not Taxable 21.023
Authorized Investments 21.024
Security for Deposit of Funds 21.025
Mutilated, Lost, or Destroyed Bonds 21.101
Texas Park Development Fund 21.102
Use of Development Fund 21.103
Acquiring Park Sites 21.104
Contracts Authorized 21.105
Interest and Sinking Fund 21.106
Credits to Interest and Sinking Fund 21.107
Additional Transfers 21.108
Interest and Sinking Fund: Final Transfer 21.109
Transfers Required 21.110
Investment of Funds 21.111
Entry Fees to Parks 21.1061
Report to Bond Review Board