Topps has been copying older sets for over 60 years now
1948 Magic Photo = 1930 Ray-O-Print & 1938 Foto Fun
1951 Team Cards = T200 Fatima
1951 Redback/Blueback & 1968 Game = 1913 WG5, WG6 & 1936 Goudey
1951 Connie Mack AS & 1964 Standups = 1934 R318 Batter Up & 1937 V300
1955 Doubleheaders = T201 Mecca Double Folder
1956 Pins = 1910 P2
1961 Stamps = T332
1967 Discs = E254 Colgans
1970 Candy Lids = 1937 Dixie Lids
etc.