Johnson, J.H. & Wolman, A.A. (1984)
The humpback whale, Megaptera novaeangliae. Marine Fisheries Review, 46, 30–37
Johnson, J.H. & Howell, B.F. (1948)
A new Cretaceous calcareous alga from Kansas. Journal of Paleontology, 22(5), 632–633