Frank Springer

American Silurian Crinoids

Frank Springer

Marvel Masterworks

Frank Springer

Crinoidea Flexibilia (with an Atlas of A. B. C. and 76 Plates)

Frank Springer

Fossil Crinoid Genus Dolatocrinus and Its Allies

Frank Springer

Transformers

Frank Springer

On the Crinoid Genus Scyphocrinus and Its Bulbous Root Camarocrinus : (with 9 Plates)

Frank Springer

SILVER AGE CLASSICS BRAIN BOY SOFTEE VOL 02 W SPACE PATROL

Frank Springer

North American Crinoidea Camerata; V. 3

Frank Springer

Macarthur's Far East Air Force and the Fall of the Philippines

Frank Springer

Transformers Compendium

Frank Springer

Unusual forms of fossil crinoids

Frank Springer