Oy, does that bring back childhood memories !
I had this 45 RPM record:
Our Lady of Perpetual Obsolescence Vinyl Rescue Mission and Orphanage » Blog Archive » Passover Share: Manischewitz Presents The Jewish Cowboy : Harold Stern from Centerville, Texas
That's where I remember 'the Jewish cowboy from.
I hate to show a lack of 'google savy', but I just 'googled' 'jewish cowboy' and got a ton of hits, including
Jewish cowboy | www.somethingjewish.co.uk