Interior Signal Station on Mt. Washington.
Interior Signal Station on Mt. Washington.
Interior Signal Station on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.
Frost work on Mt. Washington.