| Business Name | Address | |
| Abel Safe & Lock | 4928 Annapolis Rd Bladensburg, MD 20710 |
 |
| Len'S Lock Svc | Hyattsville, MD 20781 | |
| D C Lock Co | 5308 Crittenden St Hyattsville, MD 20781 |
|
| Ernie'S Lock Co | 4500 Queensbury Rd Riverdale, MD 20737 |
|
| Skeleton Key | Riverdale, MD 20737 | |