The National Locksmith (ISSN0364-3719), first published in 1929, is a magazine dedicated to the locksmithing industry by the National Publishing Co. of Streamwood.
References
↑"About Us". Keyline USA. November 18, 2016. Retrieved April 25, 2017.
↑
Phillips, Bill (2005). The Complete Book of Locks and Locksmithing. Chicago: McGraw-Hill Professional. ISBN0-07-144829-2.