This document summarizes a workshop presentation on the legal challenges of building digital collections for libraries. It discusses how copyright law impacts libraries' ability to digitize and provide access to materials. It categorizes works into copyrighted, orphan/out-of-print, and public domain. For copyrighted works, various licensing models for e-lending are discussed, along with ongoing legal cases. Orphan works pose access issues without solutions. The public domain provides benefits but its scope depends on copyright term limits. Recent legal developments and participation in policy debates were recommended to help libraries adapt to the digital landscape.