Fascinating book on the art of Lock Picking, covered in detail from the equipment and tools to the techniques.
No date, but good condition booklet.
Contents page pictured.
50 Tricks With A Tarbell Cone - Ravelle & Andree
A Boon for All Seasons - Eric Mason and Barrie Richardson
A Magician In The House - Sid Lorraine
After Dinner Technique by Ken de Courcy