Secret Seven

1 The Secret Seven (1948)
     aka The Secret Seven and the Mystery of the Empty House
2 Secret Seven Adventure (1950)
     aka The Secret Seven and the Circus Adventure
3 Well Done Secret Seven (1951)
     aka The Secret Seven and the Tree House Adventure
4 Secret Seven On the Trail (1952)
     aka The Secret Seven and the Railroad Mystery
5 Go Ahead Secret Seven (1953)
     aka The Secret Seven Get Their Man
6 Good Work Secret Seven (1954)
     aka The Secret Seven and the Case of the Stolen Car
7 Secret Seven Win Through (1955)
     aka The Secret Seven and the Hidden Cave Adventure
8 Three Cheers Secret Seven (1956)
     aka The Secret Seven and the Grim Secret
9 Secret Seven Mystery (1957)
     aka The Secret Seven and the Missing Girl Mystery
10 Puzzle for the Secret Seven (1958)
     aka The Secret Seven and the Case of the Music Lover
11 Secret Seven Fireworks (1959)
     aka The Secret Seven and the Bonfire Adventure
12 Good Old Secret Seven (1960)
     aka The Secret Seven and the Old Fort Adventure
13 Shock for the Secret Seven (1961)
     aka The Secret Seven and the Case of the Dog Lover
14 Look Out Secret Seven (1962)
     aka The Secret Seven and the Case of the Missing Medals
15 Fun for the Secret Seven (1963)
     aka The Secret Seven and the Case of the Old Horse

continued in the series by Pamela Butchart

The Secret Seven Short Story Collection (1997)

Secret Seven Collection (2004)