An enumeration of the plants collected by Dr. Timothy E. Wilcox, U.S.A., and others in southeastern Arizona during the years 1892-1894Nathaniel Lord Britton, Thomas H. Kearney, Timothy E. Wilcox · First published 1894Open the Tome
Catalogue of plants collected in northwest Texas, near the headwaters of Red River, by first lieut. E.H. Ruffner, U.S. EngineersTimothy E. Wilcox, E. H. Ruffner, Alphonso Wood · First published 1877Open the Tome
