"We help our clients make money and keep it!" It's a big promise, made by an organization with an even bigger name: Rosen Seymour Shapss Martin & Company (RSSM). An accounting and consulting firm in Manhattan, RSSM serves real estate and manufacturing clients, as well as niche markets such as modeling agencies, apparel companies, and retailers. The firm offers a variety of services including accounting, auditing, business valuation, employee benefits, estate planning, forensic accounting, litigation support, management information system consulting, retirement planning, and tax preparation. RSSM was founded in 1956.