| Business | Phone |
| Asian Usa Marketing 17 Bellevue Ave, Langhorne 19047 | (215) 752-7028 |
| Barcia Direct Marketing 19 Oxford Dr, Langhorne 19047 | (215) 757-5785 |
| Charles F Bofinger 47 Woodbine Ave, Langhorne 19053 | (215) 364-8630 |
| Saatchi & Saatchi Healthcare 1 Summit Sq # 303, Langhorne 19047 | (215) 497-8400 |
| Robert H Lefever 319 Green Valley Rd, Langhorne 19047 | (215) 968-7678 |
| Harte-Hanks 2050 Cabot Blvd W, Langhorne 19047 | (215) 750-6600 |
| Lighthouse Strategic Projects 2080 Cabot Blvd W # 203, Langhorne 19047 | (215) 750-9756 |