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Remove constraint Image Available: AvailableSubject Terms Optical devices.
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![[Print of 2 gentlemen in a field with two dogs].](https://media.collections.yale.edu/thumbnail/ycba/2f858c31-457d-460c-aaa1-e26fe6c88eb7)
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- [Print of 2 gentlemen in a field with two dogs]
- [186-?]