Here is my exhibit:

http://holmesiana.net/exhibits/show/opticaltechnologies/opticaltechnologies

Here is my collection:

http://holmesiana.net/collections/show/20

Here are my items:

http://holmesiana.net/items/show/119

http://holmesiana.net/items/show/104

http://holmesiana.net/items/show/86