Also available in proofread Microsoft Word version, prepared by M. Thomas (2022).
Below is the complete book. See the Table of Contents at Messages from the Universal House of Justice 1963-86.
Documents posted between 2003-2012 had various slightly different URLs and sometimes can be found in archive.org with addresses like bahai-library.com/file.php5?file=uhj_messages_1963-86_full.