by Johns Hopkins University. School of Hygiene and Public Health. Department of Biology

1928

by Johns Hopkins University

1919

by Johns Hopkins University

1930

by Johns Hopkins University

1918

by Johns Hopkins University. School of Hygiene and Public Health

1920

by Johns Hopkins Half-Century Committee

1925

by Johns Hopkins University

1926

by Johns Hopkins University. College for Teachers

1930

by Johns Hopkins University. School of Medicine

1923

by Johns Hopkins University

1917

by Johns Hopkins University

1924

by Johns Hopkins University. Medical Department

1916