 Following its initial operation out of the Tweed home from 1950 to 1958, a museum facility was constructed on the UMD campus in 1958, with funds donated primarily by Mrs. Tweed and her daughter, Bernice Brickson.The museum has been expanded and renovated four times between 1965 and 2008.Today, the museum operates in a facility with of exhibit space, and offers nine galleries to service an average of 33,000 visitors each year.