| Business Name | Address | |
| A-Plus Security Lock & Key | 27054 Glenn Ct Mechanicsville, MD 20659 |
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| Keystone Security Specialist | 20115 Aquasco Rd Aquasco, MD 20608 |
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| T & K Locksmith | Po Box 2247 Prince Frederick, MD 20678 |
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| John'S Locksmith Svc | 20 Armory Rd Prince Frederick, MD 20678 |
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| Chesapeake Lock & Safe Svc Co | Po Box 2305 Prince Frederick, MD 20678 |
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