Comaprison of scale variation between Lambert Conformal Conic Projection and Mercator projections for identical conditions.

The projection system for world aeronautical charts. Lambert conformal conic bands between 75 degrees north and south; stereographic polar projections. Broken lines indicate standard parallels.

A rolling fit is found only between bands. Charts wholly within bands fit perfectly together.

Chart 5101A - San Diego to Santa Rosa Island. First edition published in February 1939. This chart was a prototype chart developed for bathymetric navigation. Because the C&GS had developed radio acoustic ranging, it was able to accurately chart the continental shelf and slope. Development of LORAN in WW II made high-resolution bathymetric charts un-necessary.

Sketch showing where radio acoustic ranging tests were made in the Santa Cruz Basin. These tests led to the discovery of what is now termed the SOFAR sound channel.

Water color painting by Captain Marvin Paulson (C&GS ret.). Captain Paulson was over 90 years old when he made this painting of his reminiscence of service with the C&GS in Alaskan waters.

Water color painting by Captain Marvin Paulson (C&GS ret.). Captain Paulson Water color painting by Captain Marvin Paulson (C&GS ret.). Captain Paulson service with the C&GS in Alaskan waters.

George Davidson standing outside a field tent somewhere in California.

Field observing tent used as windbreak somewhere in California mountains.

Insignia of the U.S.E.S.S.A. Commissioned Corps. ESSA, the Environmental Science Services Administration, was formed from the Coast and Geodetic Survey and the United States Weather Bureau in 1965. It existed as a government agency until 1970 when NOAA was formed.

Presidential Proclamation signed by President Dwight D. Eisenhower proclaiming February 1957 as Coast and Geodetic Survey month.

Invitation to celebratory dinner of the 150th Anniversary of the Coast and Geodetic Survey.

Cover of Sesquicentennial Dinner Program of the Coast and Geodetic Survey.

Title page of Coast and Geodetic Survey Sesquicentennial Dinner.

Menu and program of speakers of the Sesquicentennial Dinner of the Coast and Geodetic Survey.

Seating assignments for Sesquicentennial Dinner of the Coast and Geodetic Survey .

Seating assignments for Sesquicentennial Dinner of the Coast and Geodetic Survey .

Seating assignments for Sesquicentennial Dinner of the Coast and Geodetic Survey .

Napkin embossed with 162nd Anniversary of Coast and Geodetic Survey.

Invitation to retirement banquet of Vice Admiral H. Arnold Karo, the highest ranking officer of the Coast and Geodetic Survey since the beginning of the commissioned service of the C&GS.

Invitation to the 50th Anniversary of the Commissioned Corps of the Environmental Science Services Administration, formerly the commissioned . corps of the Coast and Geodetic Survey.

Explanatory page of invitation to 50th Anniversary of the Commissioned Corps of the Coast and Geodetic Survey.

77-foot Bilby steel tower at Station Moody in Texas

Cotton, Shaw, and Hadley

Luloff, party chief Lieutenant Commander E.H. Bernstein, Cavitt, Green, and Brown holding a strategy session on the move from Texas to Nevada.

Lieutenant Commander E.H. Bernstein, Shaw, and Croasdale during measurement of Ely base line.

Al Howe lining up a heliotrope mirror at Station Jones. Heliotropes were used in the afternoon for vertical angles.

Al Howe's o-party Howe, Mason, and Sternberg at Station Joshua on a day off. Gil Stenberg at the guitar, Earl Mason checking figures.

Wheeler Peak

On the trail to Wheeler Peak, one of the original 39th Parallel Survey stations. This was taken one mile from the builders camp at the 7000 foot level. The station was built in one long day. The peak is 13,067 feet high.

Wheeler Peak and Stella Lake, a place of rare beauty.

Looking south from Wheeler Peak

Bill Toothaker and Pinky Wolfe at the summit of Wheeler Peak. The rock structure was built by William Eimbeck and his 39th Parallel Party as a wind break in 1881 when the station was first observed.

Reitinger recording

Bob Green, Hadley, and Reitinger observing angles from a mountain peak.

Tom Lovering and Shorty during Ely base line measurement operations.

Parkhurst theodolite at Station North Lovell

Rolbe with a walkie-talkie radio, a relatively new way of communicating between observation parties and light-keepers.

Enterprise Reservoir is seen below Station Hawkins. Note signal lanterns secured by rocks to keep from blowing over.

Observing tower on Ella Mountain. This station was one of the more challenging for the building crew that erected the observing stand.

A 50-foot pole tower at Station Yeso

Building an instrument stand up through an existing lookout tower.

Resting the feet or drying them off after a hike up Mt. Graham. Apparently observation tower had been blown over or struck by lightning. Chief, Wild Bill, and N.G. McCoy.

On the road at Cumbres Pass

Truck travel near Cimarron

Jeep on the road to Station Kane.

Hadley and Wildman fording the Gila River in a C&GS truck

Truck fording the Gila River

Howe and Edmonds at the end of truck travel (E.T.T. in field notes) prior to packing to station on Spring Mountain west of Truth or Consequences.

Aspen and evergreen in the high country