I found Sobran's "For Fear of the Jews" at the IHR website. He's listed as a speaker at their 2002 conference.
Yeah, "For Fear of the Jews" is apparently his speech there.
Go to Sobrans Web page, access his 2002 Newsletter archives, you’ll find it in
May 2002 — Vol. 9, No. 5 second article, titled “The Obsession”.
This link might take you right there.
AM, simply pinged you to clarify Sobran’s authorship