Rock and Roll beats?

Just wondering if anyone has actually seen any pure 50’s and 60’s rock and roll beats? I have the “Oldies” folder but it’s mostly bum chaka chaka stuff no pure straight or swing R+R - al la Elvis, Chuck Berry, Bill Haley et al.

I’ve asked Goran several times about creating a set, but he never seems to have the time, which is understandable haha!