BioStor
 | Third Ust of additions to the flora of Washington, D.C T Holm (1892) Proceedings of The Biological Society of Washington 7: 105-132 |
 | New Species of Fungi from Various Localities J B Ellis and B M Everhart (1895) Proceedings of The Academy of Natural Sciences of Philadelphia 47: 413-441 |
 | La fauna de la Republica Argentina. E L Holmberg (1898) Segundo censo nacional : 477-602 |
 | Fifth list of additions to the flora of Washington, D.C T Holm (1901) Proceedings of The Biological Society of Washington 14: 7-22 |
 | A list of the ferns and fern allies of North America north of Mexico, with principal synonyms and distribution William R Maxon (1901) Proceedings of The United States National Museum 23: 619-651 |
 | New Species of Microlepidoptera (1918) Canadian Entomologist 50: 229-236 |