Drawings of wildflowers taken from the United States Army Corps of Engineers 1848 work “Notes of a military reconnaissance, from Fort Leavenworth, in Missouri, to San Diego, in California, including parts of the Arkansas, Del Norte, and Gila Rivers.” C. B. Graham, lithographer. “Zinnia Grandiflora.” Page 204. Collections of the University of Michigan. Google, digitalizing sponsor. In the public domain. via https://archive.org/details/bub_gb_ggFZAAAAMAAJ/page/n203/mode/2up Title not legible. Page 208. Collections of the University of Michigan. Google, digitalizing sponsor. In the public domain. via https://archive.org/details/bub_gb_ggFZAAAAMAAJ/page/n207/mode/2up Title not legible. Page 210. Collections of the University of Michigan. Google, digitalizing sponsor. In the public domain. via https://archive.org/details/bub_gb_ggFZAAAAMAAJ/page/n209/mode/2up Title not legible. Page 210. Collections of the University of Michigan. Google, digitalizing sponsor. In the public domain. via https://archive.org/details/bub_gb_ggFZAAAAMAAJ/page/n209/mode/2up