After more than 35 years of operation, Rye Brook, NY-based SLG Advertising has closed its doors, president and CMO Steve Greenberger said in a notice announcing the formation of his own Rye Brook, NY-based shop, SR Greenberger & Associates. Greenberger, a veteran of big agency media shops such as MediaCom, Zenith Media, and Campbell-Mithun-Esty, is well known for his print media expertise. He says his new firm will focus on media buying and planning, special events, endorsement deals, branding opportunities and product placement.