Cover of The American Journal of Science by John Rodgers

The American Journal of Science

John Rodgers
Cover of The American Journal of Science, Volume 14 by Wilmot Hyde Bradley

The American Journal of Science, Volume 14

Wilmot Hyde Bradley
Cover of The American Journal of Science; Volume 11 by John Rodgers

The American Journal of Science; Volume 11

John Rodgers
Cover of Trilobites from the Lower Champlainian Formations of the Appalachian Valley by Byron Nelson Cooper

Trilobites from the Lower Champlainian Formations of the Appalachian Valley

Byron Nelson Cooper