The Potomac Formation in Virginia

The Potomac Or Younger Mesozoic Flora: Volume 15, Part 1

Contributions to the Knowledge of the Older Mesozoic Flora of Virginia

Contributions to the Knowledge of the Older Mesozoic Flora of Virginia

The Potomac Or Younger Mesozoic Flora: Part 1

Contributions to the Knowledge of the Older Mesozoic Flora of Virginia

The Potomac Or Younger Mesozoic Flora: Volume 15, Part 1

The Potomac Or Younger Mesozoic Flora: Volume 15, Part 2

The Potomac Or Younger Mesozoic Flora

Contributions to the Knowledge of the Older Mesozoic Flora of Virginia

Contributions to the Knowledge of the Older Mesozoic Flora of Virginia

Contributions to the Knowledge of the Older Mesozoic Flora of Virginia

The Potomac Formation in Virginia: Issues 145-149

Contributions to the Knowledge of the Older Mesozoic Flora of Virginia

The Potomac Or Younger Mesozoic Flora: Part 1

The Permian Or Upper Carboniferous Flora of West Virginia and S. W. Pennsylvania: Page 2

Resources of West Virginia

Status of the Mesozoic Floras of the United States: Volume 48, Part 1

Status of the Mesozoic Floras of the United States: Text

Status of the Mesozoic Floras of the United States: First Paper: The Older Mesozoic