Samuel Lewis Penfield

1856 – 1906,

• Contributions to mineralogy and petrography from the laboratories of the Sheffield scientific school of Yale university
• Tables of minerals
• Tables of minerals, including the uses of minerals and statistics of the domestic production
• On some alkaline iodates
• On the rubidium and potassium trihalides
• Papers on stereographic projection
• The stereographic projection and its possibilities, from a graphical standpoint