Roy Sylar, truck driver and umbrella holder for the airplane beacon party of George L. Anderson. Roy served with the Coast and Geodetic Survey until into the 1960's. He was born the same day as Floyd Risvold, February 28, 1912.

Floyd Risvold, standing in front C&GS Truck no. 85., somewhere along the California coast. At this time he was the recorder for Lieutenant George L. Anderson's airport beacon party.

Not quite "The Grapes of Wrath." Floyd Risvold and Lieutenant George L. Anderson picking fruit during a break from duties with airport beacon location crew.

Airplane beacon, one of many located by the party of Lieutenant George L. Anderson, along the California coast.

Horse-packing into a station along the 46th Parallel. Lieutenant Ector B. Latham, Chief of Party.

Horse-packing into a station along the 46th Parallel. Lieutenant Ector B. Latham, Chief of Party. Bill Husemeyer in photo.

The observing party at Station Bluff in Montana.

The observing stand after taking down the shelter tent at Station Bluff.

Dick Dana packing into Station Atacosa along the Arizona-Mexico border.

Old Baldy, barely visible in the distance, as seen from Station Atacosa. Party of Lieutenant Ector B. Latham.

Country on the Mexican border as seen from Station Atacosa.

The lookout house at Station Atacosa. Roper Crawford packing theodolite No. 356 to station. Party of Lieutenant Ector B. Latham.

Station Atacosa as seen from the trail. A one and a half hour pack. Party of Lieutenant Ector B. Latham.

Station Sauharita. One of the few drive-to stations. Party of Lieutenant Ector B. Latham.

Floyd Risvold observing angles with theodolite No. 356 at Station Sauharita.

Snow in the desert near Nogales.

Station Hawk Peak as seen from the road. South of the Gila Valley. Lieutenant Jack Johnson, Chief of Party.

A dangerous climb to Hawk Peak. Note observing stand at top of mountain. Lieutenant Jack Johnson, Chief of Party.

Packing up Hawk Peak, 10627 feet, in the Pinaleno Mountains. Note packer in left center of picture and 4-foot observing stand at top of mountain. Lieutenant Jack Johnson, Chief of Party.

Packing up Hawk Peak, 10627 feet, in the Pinaleno Mountains. A picture designed for vertigo.

Packers lending each other helping hands as making way to the top of 10,627 foot Hawk Peak in the Pinaleno Mountains. Lieutenant Jack Johnson, Chief of Party.

Observing tent on triangulation station on the top of Hawk Peak, 10,627 feet, in the Pinaleno Mountains. Lieutenant Jack Johnson, Chief of Party.

A photo opportunity along Cliff Creek in the Lolo National Forest area along the Idaho-Montana border. In today's Selway-Bitterroot Wilderness Area.

Late summer/ early fall snow in area along the Montana-Idaho border area. Lieutenant Ector B. Latham, Chief of Party, on the right.

Somewhere in the West. Floyd Risvold observing, Dube Erickson recording. Somewhere in the West.

Station Glendive was the center of the water tank at Glendive. Note the observing tent set up over the center of the tower.

"Three Wise Men". Leonard C. "Jack" Johnson on left (outgoing party chief), Ector Latham in center (new party chief), Jack Bachtel. This was when the party was moving north up the 115th meridian and was working in SW Colorado.

Clarence Olson, Bill Husemeyer, and Floyd Risvold breaking camp at Graingerville, Idaho.

Most of the crew together at a Sunday afternoon in camp.

Standing: Bill Bussey, L.C. "Jack" Johnson, Cartwright, W. C. Names, Charles Hoepell. Kneeling: Floyd Risvold, Truman "Shorty" Pearson, Jack Bachtel.

On the way to Station Lone Cone in Southwest Colorado. A two hour ride followed by a 1 hour and 50 minute pack from timberline to the top of the mountain.

On the way to Station Lone Cone in Southwest Colorado. A two hour ride followed by a 1 hour and 50 minute pack from timberline to the top of the mountain.

On the way to Station Lone Cone in Southwest Colorado. A two hour ride followed by a 1 hour and 50 minute pack from timberline to the top of the mountain.

On the way to Station Lone Cone in Southwest Colorado. A two hour ride followed by a 1 hour and 50 minute pack from timberline to the top of the mountain.

On the way to Station Lone Cone in Southwest Colorado. A two hour ride followed by a 1 hour and 50 minute pack from timberline to the top of the mountain.

On the way to Station Lone Cone in Southwest Colorado. A two hour ride followed by a 1 hour and 50 minute pack from timberline to the top of the mountain.

On the way to Station Lone Cone in Southwest Colorado. A two hour ride followed by a 1 hour and 50 minute pack from timberline to the top of the mountain.

On the way to station Kofa (acronym for King of Arizona Mine).

Heading into a canyon on the way to Station Kofa. This was a very dangerous station requiring climbing with ropes to get to.

Heading up a canyon on the way to Station Kofa. This was a very dangerous station requiring climbing with ropes to get to.

Heading up a canyon on the way to Station Kofa. This was a very dangerous station requiring climbing with ropes to get to.

Heading up a canyon on the way to Station Kofa. This was a very dangerous station requiring climbing with ropes to get to.

Observing party on Station Kent near Las Cruces, New Mexico.

Packing mules with lumber to build tower on Mt. Graham in the Pinaleno Mountains near Safford, Arizona. Mt. Graham now is the site of the Mt. Graham Astronomical Observatory.

Packing mules with lumber to build tower on Mt. Graham in the Pinaleno Mountains near Safford, Arizona. Mt. Graham now is the site of the Mt. Graham Astronomical Observatory.

Packing mules with lumber to build tower on Mt. Graham in the Pinaleno Mountains near Safford, Arizona. Mt. Graham now is the site of the Mt. Graham Astronomical Observatory.

Packing mules with lumber to build tower on Mt. Graham in the Pinaleno Mountains near Safford, Arizona. Mt. Graham now is the site of the Mt. Graham Astronomical Observatory.

Packing mules with lumber to build tower on Mt. Graham in the Pinaleno Mountains near Safford, Arizona. Mt. Graham now is the site of the Mt. Graham Astronomical Observatory.

Forty foot tower built on Mount Graham in the Pinaleno Mountains. Tower was required to see over surrounding timber.

Forty foot tower built on Mount Graham in the Pinaleno Mountains. Tower was required to see over surrounding timber.