Guess The Genre #3302 (Gathered by Ken Anderson)

1945JoeLiggensHoneydripper
1945
1948BrotherBonesSweetgeorgiaBrown
1948
1949PhilHarrisStJamesInfirmary
1949
1956JerryLewisRockAByeYourBaby
1956
1956JohnnyMathisWhenSunnyGetsBlue
1956
1957BuddyHollyEveryday
1957
1958JamiesSummertime
1958
1958RobertMitchumThunderRoad
1958
1960ElviPresleyItsNowOrNever
1960
1963Jan&DeanSurfCity
1963
1964BeachBoys4-By
1964
1964BeatlesIFeelFine
1964
1964PetulaClarkDowntown
1964
1966CountFivePsychoticReaction
1966
1969CreedenceClearwaterRevivalGreenRiver
1969

Answer: Bert-Co Press Linotype 78/45 RPM Labels - Next is Guess the Genre #3303

Or, I don't want to guess - Show Me A List