Bibliographic Index of American Ordovician and Silurian Fossils ...

The Waverlyan Period of Tennessee

The Bryozoan Fauna of the Rochester Shale

The Formation of Geodes with Remarks on the Silicification of Fossils

A Study of the James Types of Ordovician and Silurian Bryozoa

Bibliographic Index of American Ordovician and Silurian Fossils ...

The Structural Features of the Bryozoan Genus Homotrypa, with Descriptions of Species from the Cincinnatian Group

Bibliographic Index of American Ordovician and Silurian Fossils ...

North American Early Tertiary Bryozoa: 1920

A Synopsis of American Fossil Bryozoa, Including Bibliography and Synonymy

A Synopsis of American Fossil Bryozoa, Including Bibliography and Synonymy

A Synopsis of American Early Tertiary Cheilostome Bryozoa

Fossil and Recent Bryozoa of the Gulf of Mexico Region

A Synopsis of American Fossil Bryozoa, Including Bibliography and Synonymy

North American Early Tertiary Bryozoa: 1920

Contributions to the Geology and Paleontology of the Canal Zone, Panama, and Geologically Related Areas in Central America and the West Indies: Issue 103, Part 6

Contributions to the Geology and Paleontology of the Canal Zone, Panama, and Geologically Related Areas in Central America and the West Indies: Issue 103, Parts 7-8

Economic Geology of the Beaver Quadrangle, Pennsylvania: (southern Beaver and Northwestern Allegheny Counties)