Sonny Bono Memorial Collection"We believe the works in this collection are eligible for free public access under 17 U.S.C. Section 108(h) which allows for non-profit libraries and archives to reproduce, distribute, display and publicly perform a work if it meets the criteria of: a published work in the last twenty years of copyright, and after conducting a reasonable investigation (read more here), no commercial exploitation or copy at a reasonable price could be found. This provision was enacted at the same time as the Sonny Bono Copyright Term Extension Act. This collection has been named for Sonny Bono to acknowledge this valuable exemption specifically granted to libraries that was put into the law." (https://archive.org/details/last20?tab=about).