File Card index, 1915 Box 9 In: Blanchard Family Papers, circa 1835-circa 2000 » Nathan A. Cobb » Inventions and Patents
File Cylinder calendar, undated Box 9 In: Blanchard Family Papers, circa 1835-circa 2000 » Nathan A. Cobb » Inventions and Patents
File Microscope, mechanical stage, 1912-1918 Box 9 In: Blanchard Family Papers, circa 1835-circa 2000 » Nathan A. Cobb » Inventions and Patents
File Microscope centering substages, 1918 Box 9 In: Blanchard Family Papers, circa 1835-circa 2000 » Nathan A. Cobb » Inventions and Patents
File Microscope cover glass centering devices, 1912-1915 Box 9 In: Blanchard Family Papers, circa 1835-circa 2000 » Nathan A. Cobb » Inventions and Patents
File Microscope finder slides, 1912-1920 Box 9 In: Blanchard Family Papers, circa 1835-circa 2000 » Nathan A. Cobb » Inventions and Patents
File Microscope slides, 1912-1917 Box 9 In: Blanchard Family Papers, circa 1835-circa 2000 » Nathan A. Cobb » Inventions and Patents
File Microscope slide case, 1917 Box 9 In: Blanchard Family Papers, circa 1835-circa 2000 » Nathan A. Cobb » Inventions and Patents
File Microscope superfine adjustments, 1917 Box 9 In: Blanchard Family Papers, circa 1835-circa 2000 » Nathan A. Cobb » Inventions and Patents