“…A similar succession of deposits and soils has been independently recognized in Kansas (Frye and Hibbard, 1941;Hibbard, 1944Hibbard, , 1948Hibbard, , and 1949Frye, 1945Frye, , 1946Frye, , 1948Frye, , 1949Frye, , 1951Frye and Fent, 1947;Frye, Swineford, and Leonard, A. B., 1948;Frye and Leonard, A. R., 1949;Frye and Leonard, A.…”