Questrom School of Business Mehrotra Institute for Business, Markets, and Society hosted a 150-year anniversary celebration of Alexander Graham Bell’s invention of the telephone at the Charles River Museum March 27. Bell was a professor of the mechanism of speech in BU’s School of Oratory at the time of his invention. Attending were Sara Grosvenor, Bell’s great-granddaughter, president of the Alexander and Mabel Bell Legacy Foundation, and Robert Mellors, great-grandson of Thomas Watson, Bell’s assistant, who was on the other end of that famous first phone call. It was the first time the two families had met. The New Hampshire Telephone Museum loaned a number of 19th-century phones from their collection for the occasion.