'''Sternstunden der Schlossgeschichte''' Dr. Ulrich Morgenroth
'''Sternstunden der Schlossgeschichte''' Dr. Ulrich Morgenroth
2008 Duisburg ISBN 978-3-87463-428-1
2008 Duisburg ISBN 978-3-87463-428-1
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Carl Hammer: [https://archive.org/details/Expedient_BE_Tactics_and_Techniques_for_Bypassing_Alarms_and_Defeating_Locks_Pal Expedient B & E : tactics and techniques for bypassing alarms and defeating locks], 1992
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Rechte der bearbeiteten Version bei Ernst Wasmuth Verlag Tübingen 1984
Rechte der bearbeiteten Version bei Ernst Wasmuth Verlag Tübingen 1984
ISBN 3-572-01232-5
ISBN 3-572-01232-5
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Sir George Hayter Chupp: [https://archive.org/details/protectionfromfi00chub Protection from fire and thieves : including the construction of locks, safes, strong-rooms, and fireproof buildings : burglary, and the means of preventing it : fire, its detection, prevention, and extinction, etc. : also a complete list of patents for locks and safes], 1875
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Linux Yale Jr.: [https://archive.org/details/ADissertationOnLocksAndLockpickingAndThePrinciplesOfBurglarProofing A dissertation on locks and lockpicking and the principles of burglar proofing : showing the advantages attending the use of the magic infallible bank lock], 1856