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![Observatory tent, N. A. [i.e., North American] Boundary Commission](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzIwMTkvMDkvMTAvb2JzZXJ2YXRvcnktdGVudC1uLWEtaWUtbm9ydGgtYW1lcmljYW4tYm91bmRhcnktY29tbWlzc2lvbi0xYzUxYjUtMTAyNC5qcGc%3D/40/32/webp "Observatory tent, N. A. [i.e., North American] Boundary Commission")
Observatory tent, N. A. [i.e., North American] Boundary Commission
Photograph shows Captain Charles J. Darrah, R.E., seated in tent, and Captain Robert W. Haig, R.A. of the British North American Boundary Commission posed at an astronomical observation tent with theodolite, du... More
![Observatory tent, N. A. [i.e., North American] Boundary Commission](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzIwMTkvMDkvMTAvb2JzZXJ2YXRvcnktdGVudC1uLWEtaWUtbm9ydGgtYW1lcmljYW4tYm91bmRhcnktY29tbWlzc2lvbi03Njk0OTItMTAyNC5qcGc%3D/40/31/webp "Observatory tent, N. A. [i.e., North American] Boundary Commission")
Observatory tent, N. A. [i.e., North American] Boundary Commission
Photograph shows Captain Charles J. Darrah, R.E., seated in tent, and Captain Robert W. Haig, R.A. of the British North American Boundary Commission posed at an astronomical observation tent with theodolite, du... More
![Observatory tent, N. A. [i.e., North American] Boundary Commission](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzIwMTkvMDkvMTAvb2JzZXJ2YXRvcnktdGVudC1uLWEtaWUtbm9ydGgtYW1lcmljYW4tYm91bmRhcnktY29tbWlzc2lvbi05MWI5OWQtMTAyNC5qcGc%3D/40/32/webp "Observatory tent, N. A. [i.e., North American] Boundary Commission")
Observatory tent, N. A. [i.e., North American] Boundary Commission
Photograph shows Captain Charles J. Darrah, R.E., seated in tent, and Captain Robert W. Haig, R.A. of the British North American Boundary Commission posed at an astronomical observation tent with theodolite, du... More