Amending an Act Entitled "An Act to Provide for the Refunding of the Bonds of Municipal Corporations and Public-utility Districts in the Territory of Alaska, to Validate Bonds which Have Heretofore Been Issued by a Municipal Corporation Or Any Public-utility District in the Territory of Alaska, and for Other Purposes" (54 Stat. 14), Approved June 17, 1940 ; to Validate Bonds which Have Heretofore Been Issued by Any Municipal Corporation, Any Public-utility District, Or Any School District in the Territory of Alaska