A reconnaissance of the Pine Creek district, Idaho, by E.L. Jones, Jr., p. 1.
Deposits of manganese ore in Arizona, by E.L. Jones, Jr., and F.L. Ransome, p. 93.
Deposits of manganese ore in Costa Rica, by J.D. Sears, p. 61.
Deposits of manganese ore in Nevada, by J.T. Pardee and E.L. Jones, Jr., p. 209.
Deposits of manganese ore in New Mexico, by E.L. Jones, Jr., p. 37.
Deposits of manganese ore in southeastern California, by E.L. Jones, Jr., p. 185.
Deposits of manganese ore near Boqueron River, Panama, by J.D. Sears, p. 85.
Index, p. 243.
List of illustrations, p. III.
Table of contents, p. III.
Electronic reproduction. Chester, Vt.: NewsBank, inc., 2007. Available via the World Wide Web. Access restricted to Readex U.S. Congressional Serial Set subscribers.