| Company | Category | Area | Address | Web | E-mail | Contact person |
| 20TH CENTURY WROUGHT IRON | Ornamental Metal Work | California | 6612 ALONDRA BLVD, PARAMOUNT, Los Angeles, California, 90723-3729, USA |
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CLINT LOCKWOOD |
| 20TH CNTURY BLDG & LAND DEV CO | Industrial Building Contractor | Michigan | 7879 WINANS LAKE RD, BRIGHTON, Livingston, Michigan, 48116-8817, USA |
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Nicholas Zander |
| 20TH CNTURY BNSAI LDSCP DESIGN | Landscape Services | Ohio | 3564 STATE RD, MEDINA, Medina, Ohio, 44256-9278, USA |
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Peter Collin |
| 20TH CNTURY CHRISTN FOUNDATION | Magazine Publishing & Printing | Tennessee | 2809 12TH AVE S, NASHVILLE, Davidson, Tennessee, 37204-2507, USA |
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Mark Macinteer |
