Financial terms were not disclosed.
Jim Carr, president and owner of Carr Communications, will join Schubert as account supervisor.
Schubert clients include TMA Resources, Motorola Inc., Sartomer Co. and Federal-Mogul's Systems Protection Group. The agency is the creator of B2BTalk.org, an online resource and interactive community for b-to-b marketers.
Under the merger, Schubert will expand its services to Carr clients, including The Drever Group, The Fredericks Co., Hull Co. and Wilmad/LabGlass.