Some time back I came across a vintage Oliver advertisement online. It featured converting other makes of plows to Oliver wear parts- shares, shins, moulboards and the economy of doing so. I have since been unsuccessful relocating the site. If someone could point me in the right location online it would be much appreciated.

I ran your query through ChatGPT and got this response:
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You’re remembering Oliver’s push for “conversion bottoms”—kits that let other brands run Oliver Raydex wear parts (throw-away shares, shins, moldboards). Here are good places online where that exact ad (or near-identical ones) turn up:

#1 place to hunt old ag ads: Virginia Chronicle (The Southern Planter, mid-1940s–50s). Search “Oliver Raydex” there; this 1944 issue is a direct hit and the adjacent pages often carry the conversion copy.
Virginia Chronicle
History Museums of San Bernardino

A period 1951 Oliver ad (“New ‘Radius Curve’ Plowshare!”). It’s the same campaign touting the throw-away economy that the conversion ads reference; the scanned page is clear.
eBay Images

1952 “Oliver Moldboard Plows & Raydex Bottoms” brochure (20 pp.). Sellers’ image galleries for this brochure commonly include the page about conversion bottoms for other makes—worth clicking through all 9 photos.
eBay

Background on the campaign/idea: Farm Collector – “The Oliver Raydex Point.” It explains the throw-away share concept that those conversion ads promoted.
farmcollector.com

Thanks Ed, one of the tractor shows I attend never features Fords. So, Ferguson plow with Oliver parts mounted on a ford could possibly permit me entry into feature area with either Oliver or Fergusons. What do ya think?

Well.....maybe if you paint it Oliver green....