Found 10 books 
[en] 5 Detective Novels, Winter 1952 5 Detective Novels
[en] Secret Agent "X" · the Complete Series Volume 3 Ozymandias Press
![[Secret Agent X 01] • Secret Agent "X" - the Complete Series Volume 4](/cover/VTz_doXEmN7-IHmv/small/[Secret%20Agent%20X%2001]%20%e2%80%a2%20Secret%20Agent%20%22X%22%20-%20the%20Complete%20Series%20Volume%204.jpg)
[en] The Pulp Fiction Megapack · 25 Classic Pulp Stories Wildside Press
Bellem, Robert Leslie & Cave, Hugh B. & Hersey, Howard & Cummi, Ray Ngs & Wallace, Robert & Wallace, John & Ward, Harold & Pendexter, Hugh & Gallagher, Hugh J. & Fleming-Roberts, G.T. & Gray, Russell & Chadwick, Paul & Meek, Captain S.P. & Wright, Sewell Peaslee & Tepperman, Emile C.
[en] Secret Agent "X" - The Complete Series Volume 4 Altus Press
[en] Secret Agent "X" - The Complete Series Volume 6 Altus Press
[en] Secret Agent “X” – The Complete Series Volume 2 Altus Press
[en] Secret Agent "X" - The Complete Series Volume 5 Altus Press
[en] Secret Agent "X" – The Complete Series Volume 1 (Annotated) Altus Press
