- 1 Charles D. Walcott
Appendages of trilobites
Washington, D.C.: 1918; S. 116 - 215 : Ill. - 2 Charles D. Walcott
The albertella fauna in British Columbia and Montana
Washington, D.C.: 1917; 59 S. : Ill. - 3 Charles D. Walcott
Cambrian sections of the cordilleran area
Washington, D.C.: 1908; S. 167 - 230 : Ill. - 4 Charles D. Walcott
Nomenclature of some cambrian cordilleran formations
Washington, D.C.: 1917; 8 S. - 5 Charles D. Walcott
The cambrian faunas of eastern Asia
Washington, D.C.: 1914; 75 S. : Ill. - 6 Charles D. Walcott
Dikelocephalus and other genera of the dikelocephalinae
Washington, D.C.: 1914; S. 335 - 409 : Ill.