Joseph Ostler, aka C. Frusher Howard, FSSc (fl.1874-1890s), who wrote <i>Howard’s California Calculator, The Newest, Quickest and Most Complete Instructor for All Who Desire to be Quick at Figures</i> (San Francisco, 1874). He is wearing the gown and hood signifying his fellowship of the Society of Science, Letters and Art, London.
Unknown author<span style="display: none;">Unknown author</span>
1874
<a rel="nofollow" class="external autonumber" href="http://contueor.com/ancestry/photos/c_frusher_howard.jpg">[1]</a>