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v.2 (1912)

Journal of the Washington Academy of Sciences.

v.5 (1915)

Journal of the Washington Academy of Sciences.

v.6 (1916)

Journal of the Washington Academy of Sciences.

v.4 (1914)

Journal of the Washington Academy of Sciences.

v.7 (1917)

Journal of the Washington Academy of Sciences.

v.8 (1918)

Memoirs of the National Academy of Sciences.

v. 23 (1941)

Memoirs of the National Academy of Sciences.

v. 3 (1885)

Memoirs of the National Academy of Sciences.

v. 17 (1924)

Memoirs of the National Academy of Sciences.

v. 19 (1927)

Memoirs of the National Academy of Sciences.

v. 15 (1921)

Memoirs of the National Academy of Sciences.

v. 13 (1915)

Memoirs of the National Academy of Sciences.

v. 21 (1926)

Memoirs of the National Academy of Sciences.

v. 8 (1896)

Memoirs of the National Academy of Sciences.

v. 10 (1911)