The Friends of the Mary Ellen Welch Greenway invite you to learn how East Boston’s abandoned rail corridor became the beautiful Greenway it is today, on Thursday, May 21 from 6:30 – 7:30 pm at the East Boston Branch Library of the Boston Public Library, 365 Bremen Street in East Boston. Special guest speaker Valerie Burns will speak. Valerie served as the president of Boston Natural Areas Network for the last quarter-century.