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NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Catalog of Images

5500 thumbnail picture
Field sketch of signal pole on tree stump. Sketch by Cephas Sinclair
Louisiana, Atchafalaya River, 1888
5501 thumbnail picture
129 foot wooden tower at Station Tate. Horse and buggy at lower right corner for scale. Triangulation party of A. T. Mosman
Ohio, Clermont County 1892
5502 thumbnail picture
Station Tate showing attached signal pole. Top of signal pole is 175 feet above ground. Triangulation party of A. T. Mosman
Ohio, Clermont County 1892
5503 thumbnail picture
Station Greene, Indiana. Instrument height is 152 feet above ground. 39th Parallel Survey. Triangulation party of George A. Fairfield
Jennings County, Indiana 1890
5504 thumbnail picture
Station Greene, Indiana. Instrument height is 152 feet above ground. 39th Parallel Survey. Triangulation party of George A. Fairfield
Jennings County, Indiana 1890
5505 thumbnail picture
Great Caspar Signal - built around tree trunk. Note boatswain chair transporting man to top. 135-foot signal --- main wood scaffold supports instrument. Tree trunk supports small scaffolding and observer at top. Western terminus of 39th Parallel Survey
Northern California 1878
5506 thumbnail picture
Wooden signal being built in Alaska.
Alaska 1943?
5507 thumbnail picture
Jasper Bilby setting up 60' reconnaissance pole. At Station Elbow - connecting with 98th Meridian Survey
Minnesota 1903
5508 thumbnail picture
John F. Hayford observing from 60' reconnaissance pole. On 98th Meridian Survey. Checking for intervisibility between stations. Helping plan for necessary height of tower at station
Minnesota 1903
5509 thumbnail picture
Jasper S. Bilby observing from short reconnaissance pole attached to tree. On 98th Meridian Survey. Checking for intervisibility between stations. Helping plan for necessary height of tower at station
Minnesota 1903
5510 thumbnail picture
Jasper S. Bilby observing from reconnaissance pole attached to tree. Top of pole is 104 feet above ground. Checking for intervisibility between stations. Helping plan for necessary height of tower at station
Minnesota 1903
5511 thumbnail picture
Beginning to erect tower at Station Hugo. Lines snapped dropping pole seconds after picture. Triangulation party of William H. Burger
The Devils Backbone, Hays County, Texas 1903
5512 thumbnail picture
Raising one side of instrument tripod at Station Hugo. Triangulation party of William H. Burger
The Devils Backbone, Hays County, Texas 1903
5513 thumbnail picture
Raising third leg of instrument tripod at Station Hugo. Triangulation party of William H. Burger
The Devils Backbone, Hays County, Texas 1903
5514 thumbnail picture
Framing first and third leg of instrument tripod at Station Hugo. Triangulation party of William H. Burger
The Devils Backbone, Hays County, Texas 1903
5515 thumbnail picture
Completed instrument tripod at Station Foss. Photo #1 of sequence
Minnesota, Wilkin County 1904
5516 thumbnail picture
First side of observer scaffolding being raised at Station Foss. Photo #2 of sequence
Minnesota, Wilkin County 1904
5517 thumbnail picture
Both sides of observer scaffolding in place at Station Foss. Photo #3 of sequence
Minnesota, Wilkin County 1904
5518 thumbnail picture
Putting ties on scaffolding at Station Foss. Photo #4 of sequence
Minnesota, Wilkin County 1904
5519 thumbnail picture
Completed tower with internal instrument tripod at Station Foss. This station took 1 and 1/2 days to complete. Photo #5 of sequence
Minnesota, Wilkin County 1904
5520 thumbnail picture
Station Pen in Washington. Triangulation party of O. B. French - occupied by J. S. Hill. Instrument was mounted on tree trunk. Instrument remained steady in azimuth but unsteady in level
Washington 1905
5521 thumbnail picture
Station Gibuson - a 68 foot tree signal. Party of John F. Pratt - off of PATHFINDER
Philippines 1910
5522 thumbnail picture
White River West Base on the 141st Meridian Survey. International Boundary Commission surveyors
Alaska-Canada Boundary 141st Meridian 1911
5523 thumbnail picture
Rock cairn signal at divide between two main forks of the Ladue River. International Boundary Commission surveyor
Alaska-Canada Boundary 141st Meridian 1911
5524 thumbnail picture
Platform and stand built between two trees on Olympic Peninsula. Note man standing on platform. Triangulation party of H. A. Seran
Olympic Peninsula, Washington 1914
5525 thumbnail picture
The crow's nest at Station Moclips - 215 feet above the ground. Note spikes driven into tree - builders would drive spikes and go hand over hand . Triangulation party of H. A. Seran. According to Seran: "It took men of uncommon nerve to do this work."
Olympic Peninsula, Washington 1914
5526 thumbnail picture
239-foot tower built on Bugsuk Island in southwest Philippines. This tower was built completely from native timber cut on location. It took 19 men off the PATHFINDER three weeks to build this signal. This was the largest wooden tower ever built by the C&GS. Used for both observing and as a signal
Philippine Islands 1915
5527 thumbnail picture
Wind tarps draping tower at Station Bippus. Wind tarps protect inner instrument tower from wind. Triangulation party of Earl O. Heaton
California, Death Valley area 1921
5528 thumbnail picture
Removing wind tarps at Station Umbarger. Wind tarps protect inner instrument tower from wind. Triangulation party of Earl O. Heaton
Randall County, Texas 1921
5529 thumbnail picture
100-foot tower at Bozeman NW Base. Note man at top. Triangulation party of William M. Scaife
Montana, Bozeman 1922
5530 thumbnail picture
115-foot tower built around tree on Sarangani Island.
Philippine Islands 1923
5531 thumbnail picture
Tower at Station Mangal. Topographic party working on the beach
Philippine Islands 1924
5532 thumbnail picture
Tower with signal flag at Station Bint. At Bihintinusa Island off the south coast of Basilan. Built by crew off the MARINDUQUE
Philippine Islands 1924
5533 thumbnail picture
Station Mangal from offshore. Built by crew off the MARINDUQUE
Philippine Islands 1924
5534 thumbnail picture
Building crew after finishing the tower. Party off the MARINDUQUE
Philippine Islands 1924
5535 thumbnail picture
Building a tower. Party off the MARINDUQUE
Philippine Islands 1924
5536 thumbnail picture
The finished tower - note guard in lower left of tower. Party off the MARINDUQUE
Philippine Islands 1924
5537 thumbnail picture
A finished large tripod signal - note the guards. Party off the MARINDUQUE
Philippine Islands 1924
5538 thumbnail picture
115-foot tower built around tree on Sarangani Island.
Philippine Islands 1923
5539 thumbnail picture
Another view of tower built around a tree on Sarangani Island
Philippine Islands 1923
5540 thumbnail picture
Small tower on a coral islet
Philippine Islands 1926?
5541 thumbnail picture
Tower with signal
Philippine Islands 1926?
5542 thumbnail picture
239-foot tower built on Bugsuk Island in southwest Philippines. This tower was built completely from native timber cut on location. It took 19 men off the PATHFINDER three weeks to build this signal. This was the largest wooden tower ever built by the C&GS. Used for both observing and as a signal
5543 thumbnail picture
Using a day marker as a tower. Photo#1 of sequence
Florida, Lake Okeechobee 1924
5544 thumbnail picture
Observing angles from the top of the day marker. Photo#2 of sequence
Florida, Lake Okeechobee 1924
5545 thumbnail picture
Tower built around tree in the Philippine jungle.
Philippine Islands
5546 thumbnail picture
Triangulation station built in shoal water. Combined operations party of Hubert A. Paton
Near Jacksonville, Florida 1934
5547 thumbnail picture
Tower built around a tree trunk.
Near Logan, West Virginia 1934?
5548 thumbnail picture
Station Plainview in eastern Montana. Triangulation party of Wilbur Porter
Montana, Eastern June 28, 1934
5549 thumbnail picture
Station Cook - tower had to be built after error by reconnaissance man. Triangulation party of Wilbur Porter
Powder River County, Montana 1934

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Last Updated:
July 7, 2015