|Publisher||London : The Fleetway House|
|Series||The Union Jack, New Series > No. 525|
|Source||Dime Novels and Popular Literature|
|Topic||Dime novels > Specimens.|
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OC iv, 28 p. : ill. Full page illustration on cover. Cover title. Donated by Demian Katz. Price "1d". Cover story: "Tinker's Terrible Test. A Tale of Sexton Blake and his Young Assistant." Running title: "Union Jack Library".