by University of Massachusetts (Amherst campus)

1917

by University of Massachusetts (Amherst campus)

1915

by University of Massachusetts (Amherst campus). Cooperative Extension Service

1927

by University of Massachusetts (Amherst campus). Cooperative Extension Service

1928

by University of Massachusetts (Amherst campus). Cooperative Extension Service

1927

by University of Massachusetts (Amherst campus). Cooperative Extension Service

1929

by Massachusetts Agricultural College, University of Massachusetts at Amherst

1906