Harriet Elizabeth Beaman 1897 (Mrs. Herbert Parker Houghton)
Address in 1937: Princeton MA
teacher 1898 Sterling
teacher 1898-1903 Princeton
Married 1903; husband was a farmer
Children:
Harriet Elizabeth born 1908
George Beaman born and died 1911
So this postcard was sent to Harriet two years after she married, but it still was delivered to her even though it was addressed to her maiden name.
Source
All information from One Hundred Year Biographical Directory of Mount Holyoke College 1837-1937, Bulletin Series 30, no. 5; published and compiled by the Alumnae Association of Mount Holyoke College, South Hadley, Massachusetts