Nev. Rev. Stat. § 267.520
All outstanding contracts, documents and other instruments pertaining to any project, and all acts and proceedings had or taken prior to March 28, 1969, or purportedly had or taken, by or on behalf of a municipality preliminary to or in the authorization, execution and otherwise making of such contracts, documents and other instruments or preliminary to or in the undertaking of the project (or any combination thereof) are hereby validated, ratified, approved and confirmed, including without limitation any election for the authorization of such contracts, the terms, provisions, conditions and covenants in any such contracts, documents and other provisions and in any resolutions and ordinances pertaining thereto, except as otherwise provided in NRS 267.525, notwithstanding any lack of power, authority or otherwise, other than constitutional, and notwithstanding any defects and irregularities, other than constitutional, in the creation of the municipality and in making or adopting such contracts, documents and other instruments, or in undertaking such project, including without limitation such acts and proceedings had or taken prior to March 28, 1969, appertaining thereto but remaining uncompleted, subject to the taking or adoption of such supplemental acts and proceedings prior to March 28, 1969, not had or taken, nor purportedly had or taken, but required by and in substantial and due compliance with NRS 267.450 to 267.530, inclusive, and any other laws pertaining thereto.
NRS 267.520