The Bradys and the double daggers; or, The secret sign of vengeance / by a New York detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 1352

by New York Detective.
Published 1924

The Bradys after the tattooed man; or, Running down a crimson clew and other stories / by a New York detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 1223

by New York Detective.
Published 1922

The Bradys and the yellow boy; or, The mystery of a nighthawk cab / by a New York detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 1215

by New York Detective.
Published 1922

The Bradys' gold vault clew; or, Who killed treasurer Black? / by a New York detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 1217

by New York Detective.
Published 1922

The Bradys and the forged check; or, The shadow on the shades / by a New York detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 1222

by New York Detective.
Published 1922

The Bradys and the dynamite gang; or, Ten hours of deadly peril / by a New York detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 1205

by New York Detective.
Published 1922

The Bradys' six bell clue; or, The masked men of magic mountain / by a New York detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 1181

by New York Detective.
Published 1921

The Bradys and the floating head; or, The clue found in the river / by a New York detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 1183

by New York Detective.
Published 1921

The Bradys' double death trap; or, After the St. Louis Seven / by a New York detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 1189

by New York Detective.
Published 1921

The Bradys and the Chinese juggler; or, The opium fiend's revenge / by a New York detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 1178

by New York Detective.
Published 1921

The Bradys and the French crooks; or, Detective work in Paris / by a New York detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 1203

by New York Detective.
Published 1922

The Bradys and the belfry "owls"; or, Trailed to the tombs / by a New York detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 1177

by New York Detective.
Published 1921

The Bradys' Bleecker Street mystery; or, The house with a hundred doors / by a New York detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 1159

by New York Detective.
Published 1921

The Bradys and the Girl in Blue; or, After the Maiden Lane Diamonds and other stories / by a New York Detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 1128

by New York Detective.
Published 1920

The Bradys and the Boston banker; or, Hustling for millions in the hub / by a New York detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 908

by New York Detective.
Published 1916

The Bradys and the bank mystery; or, The search for a stolen million / by a New York detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 873

by New York Detective.
Published 1915

The Bradys and the broker; or, The plot to steal a fortune / by a New York detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 867

by New York Detective.
Published 1915

The Bradys' boy pupil; or, Sifting strange evidence / by a New York detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 878

by New York Detective.
Published 1915

The Bradys and Jockey Joe; or, Crooked Work at the Race Track and other stories / by a New York Detective.

Series: Secret Service Old and Young King Brady, Detectives -- no. 989

by New York Detective.
Published 1918

The Bradys after the Tong Kings, or, The Red Lady of Chinatown / by a New York Detective, [Reprint].

Series: Secret Service Old and Young King Brady, Detectives -- no. 565

by New York Detective.
Published 1909