Hans Conkel

How To Open Locks With Improvised Tools: Practical, Non-Destructive Ways Of Getting Back Into Just About Everything When You Lose Your Keys (formerly published as Lock Bypass Methods)  Hans Conkel Paperback. Level Four Publications, Inc., 2001-10-28 ISBN 9780966608717     Lock Bypass Methods  Hans Conkel Paperback. Level Four Pubns, 1998-08-15 ISBN 9780966608700