Vile John R. Vile 
Encyclopedia of Constitutional Amendments, Proposed Amendments, and Amending Issues, 1789-2023 [PDF ebook] 

Written by a leading scholar of the constitutional amending process, this two-volume encyclopedia, now in its fifth edition, is an indispensable resource for students, legal historians, and high school and college librarians. This authoritative reference resource provides a history and analysis of all 27 ratified amendments to the Constitution, as well as insights and information on thousands of other amendments that have been proposed but never ratified from America’s birth until the present day. The set also includes a rich bibliography of informative books, articles, and other media related to constitutional amendments and the amending process.