Marc Rosenberg, the “lemonade-shaking guy” whose manic energy and aerobic lemonade-selling routine at Camden Yards delighted park visitors and made him a viral hero in an age before cellphones, died Friday at an alternative medicine institute in Mexico of non-Hodgkin lymphoma. The Owings Mills resident was 56.
Mr. Kerzel said he first encountered Mr. Rosenberg at Camden Yards in the mid-1990s, the early years of the ballpark when seats regularly sold out.
