Undoubtedly for me one of the best compilations of white groups classified as extremely rare are the two volumes on compact disc that came out in the mid-90's "Doo Wop Dreams, Rarest of The Rare White Groups".
Now they are available on eBay (is very rare to see for sale) and it is a great opportunity to have them in the collection of any lover of the white doo wop groups, why getting the original 45 rpm recordings that carry these two CDs, would be impossible or very expensive.
Click on these two links;
https://www.ebay.com/itm/233854612061
https://www.ebay.com/itm/233854614469
It should be clarified that later two more volumes came out under this title, but they have nothing to do with the two mentioned above because they were made by another different record label without the "oddities" that the first two carry have.