This book (or monograph rather) by J. W. Hanson, functioning as a word study in favor of universalism, has been mentioned a few times on the forum; here is a link to a transcription of the 4th edition at the Tentmaker.org site.
Thanks to Victor Reppert at DangIdea for the link. (And here’s a link back to the thread he introduces it in for discussion. Not much there yet at the time of this posting, but could be more later.)