New positions
Advance Business Systems & Supply announced the appointment of Brian E. Landgren as chief financial officer.
* Columbus Center Development Inc. has named Dr. Carol J. Bossert as director of exhibitions.
* Valuation Research Corp. appointed Charles E. Phipps regional manager of business development for its Baltimore-based mid-Atlantic region.
Legal and Professional
* Venable, Baetjer and Howard announced that John G. Milliken, a former secretary of transportation for Virginia, has joined the firm as a partner in its government services division.
