Investigations of the New Madrid seismic zone / Ed.: K. M. Shedlock, A. C. Johnston, 1994. - 6,16 p. p. - Текст : непосредственный.
Responses to Iben Browning's prdiction of a 1990 New Madrid, Missouri, earthquake / W.Spence,R.B.Herrmann,A.C.Johnston,G.Reagor, 1993. - 248 p. - Текст : непосредственный.
Tecumseh-s prophecy: preparing for the next new Madrid earthquake : A plan for and intensified study of the new Madrid seismic zone / сост.ed. R. M. Hamilton, сост.ed. A. C. Johnston, 1990. - V,30 p. p. - Текст : непосредственный.