- 4 Original Kellner Letters, 1853/54...
- 2 Microscopes by Ernst Leitz...
- Student's Microscope and Dissecting Microscop...
- Laboratory Microscope by Ernst Leitz, c. 1947...
- 3 Microscopes by Leitz and Zeiss...
- Very Early Microscope by Carl Zeiss, c. 1874...
- 2 Early Microscopes by Carl Zeiss...
- Early Microscope by Carl Zeiss, c. 1878...
- Brass Microscope by Carl Zeiss, c. 1894...
- Brass Microscope by Carl Zeiss, c. 1885...
- Heavy Brass Microscope by Carl Zeiss, c. 1892...
- Zeiss Laboratory Compound Microscope, c. 1890...
- Small Microscope by Carl Zeiss, c. 1886...
- Early and Unusual Brass Microscope by Carl Ze...
- Early Microscope by Carl Zeiss, c. 1879...
- Brass Microscope by Carl Zeiss, c. 1889...
- 2 Brass Compound Microscopes, c. 1880...
- 2 Microscopes...
- Reichert Compound Monocular Microscope, c. 18...
- Viennese Microscope by Reichert...
- Seibert Laboratory Microscope, c. 1885...
- Hartnack Compound Microscope, c. 1880...
- Hartnack Brass Compound Microscope, c. 1875...
- "Le Trichinoscope" Brass Microscope by Arthur...
- Trentact 8x by Carl Zeiss Jena, 1913/14...
- Camera Lucida, c. 1900...
- Carl Zeiss Telescope 4–20x ...