February is the perfect month to be able to offer free admission to Worcester Historical Museum and the museum's largest artifact Salisbury Mansion...to the Worcester community and beyond. For nearly 100 years, Worcester was the center of the commercial valentine industry in the United States. In 1847, according to local folklore, Worcester resident Esther Howland received an English valentine, which inspired her to design her own. She sold her cards through her father's stationery store. Business flourished, and Esther recruited friends to assemble cards in a third-floor room at the family residence, 16 Summer Street.