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No Radio Signal From Mars

UMG24A04_013

No Radio Signal From Mars

Railroad Crossing Signs

UMG23A55_210

Railroad Crossing Signs

Lineman of the Signal Corps.

UMG22A70_370

Lineman of the Signal Corps.

Hieroglyphic Praise to Sesostris I.

UMG22A66_420

Hieroglyphic Praise to Sesostris I.

Maritime semaphore installed in the Guzman el Bueno Castle

UMG21A06_116

Maritime semaphore installed in the Guzman el Buen...

SOS Iceberg "S.O.S. Iseberg"

UMG20B33_339

SOS Iceberg "S.O.S. Iseberg"

Pluton antennas - radio antenna array that received the signals from the soviet space probe, venera 4, 1967.

UMG20B03_278

Pluton antennas - radio antenna array that receive...

Beaufort, South Carolina. Federal signal station. Formerly the home of John G. Barnwell 1862

UMG20A59_207

Beaufort, South Carolina. Federal signal station. ...

Brandy Station, Virginia. Telegraph Corps camp 1864

UMG20A60_004

Brandy Station, Virginia. Telegraph Corps camp 186...

Petersburg, Virginia. Group at Telegraphic Corps quarters. Headquarters, Army of the Potomac 1863

UMG20A68_483

Petersburg, Virginia. Group at Telegraphic Corps q...

Chattanooga, Tennessee, vicinity. Tripod signal erected by Captains. Dorr and Donn of U.S. Coast Survey at Pulpit Rock on Lookout Mountain 1864

UMG20A69_046

Chattanooga, Tennessee, vicinity. Tripod signal er...

Washington, D.C. Hospitals, Signal Corps camp quarters near Georgetown 1862

UMG20A73_210

Washington, D.C. Hospitals, Signal Corps camp quar...

Atlanta, Georgia. Railroad yards 1864

UMG20A58_374

Atlanta, Georgia. Railroad yards 1864

Bermuda Hundred, Va. African-American teamsters near the signal tower 1863

UMG20A59_237

Bermuda Hundred, Va. African-American teamsters ne...

Chattanooga, Tennessee (vicinity). Tripod signal erected by Captains. Dorr and Donn of U.S. Coast Survey at Pulpit Rock on Lookout Mountain 1864

UMG20A60_380

Chattanooga, Tennessee (vicinity). Tripod signal e...

Petersburg, Virginia (vicinity). Military telegraph operator, headquarters, Army of the Potomac 1864

UMG20A68_469

Petersburg, Virginia (vicinity). Military telegrap...

Washington, D.C. Central Signal Station, Winder Building, 17th and E Streets NW, and Signal Corps men 1865

UMG20A73_181

Washington, D.C. Central Signal Station, Winder Bu...

Bermuda Hundred, Va. Officers by their quarters near the signal tower

UMG20A59_240

Bermuda Hundred, Va. Officers by their quarters ne...

Bermuda Hundred, Va. Officers by their quarters near the signal tower 1863

UMG20A59_241

Bermuda Hundred, Va. Officers by their quarters ne...

Elk Mountain, Maryland. Signal tower overlooking Antietam battlefield 1862

UMG20A62_228

Elk Mountain, Maryland. Signal tower overlooking A...

Elk Mountain, Maryland. Signal tower overlooking Antietam battlefield 1862

UMG20A62_230

Elk Mountain, Maryland. Signal tower overlooking A...

Wilcox's Landing, Va., vicinity of Charles City Court House. Field telegraph station 1864

UMG20A73_389

Wilcox's Landing, Va., vicinity of Charles City Co...

Elk Mountain, Maryland. Signal tower overlooking Antietam battlefield 1862

UMG20A62_227

Elk Mountain, Maryland. Signal tower overlooking A...

Harrison's Landing, Virginia. Headquarters of Signal Corps

UMG20A64_297

Harrison's Landing, Virginia. Headquarters of Sign...

Jacksonville, Fla. Signal tower

UMG20A65_348

Jacksonville, Fla. Signal tower

Petersburg, Va., vicinity. Maj. Thomas T. Eckert (seated, left) and others of U.S. Military Telegraph Corps 1864

UMG20A68_467

Petersburg, Va., vicinity. Maj. Thomas T. Eckert (...

Petersburg, Virginia. Group at Telegraphic Corps quarters. Headquarters, Army of the Potomac

UMG20A68_484

Petersburg, Virginia. Group at Telegraphic Corps q...

Bermuda Hundred, Va. Photographer at Butler's signal tower 1864

UMG20A59_242

Bermuda Hundred, Va. Photographer at Butler's sign...

Harrison's Landing, Virginia. Headquarters of Signal Corps

UMG20A64_296

Harrison's Landing, Virginia. Headquarters of Sign...

Morris Island, South Carolina. Bombproof for telegraph operator in trenches 1863

UMG20A67_355

Morris Island, South Carolina. Bombproof for teleg...

Richmond, Va. Wagon train of Military Telegraph Corps 1865

UMG20A70_065

Richmond, Va. Wagon train of Military Telegraph Co...

Brandy Station, Virginia. Telegraph Corps camp 1864

UMG20A60_005

Brandy Station, Virginia. Telegraph Corps camp 186...

Elk Mountain, Maryland. Signal tower overlooking Antietam battlefield 1862

UMG20A62_229

Elk Mountain, Maryland. Signal tower overlooking A...

Petersburg, Va. Signal tower at 14th New York Heavy Artillery headquarters 1864

UMG20A68_452

Petersburg, Va. Signal tower at 14th New York Heav...

Petersburg, Va. U.S. Military Telegraph battery wagon, Army of the Potomac headquarters 1864

UMG20A68_464

Petersburg, Va. U.S. Military Telegraph battery wa...

Signalmen of Rear Admiral John A. Dahlgren's flagship receiving a message from the Georgia shore 1864

UMG20A70_429

Signalmen of Rear Admiral John A. Dahlgren's flags...

Bermuda Hundred, Va. Signal tower on left of the line near the Appomattox River 1864

UMG20A59_243

Bermuda Hundred, Va. Signal tower on left of the l...

Fort Monroe, Virginia. Light house

UMG20A63_087

Fort Monroe, Virginia. Light house

Prospect Hill, Virginia. Signal station at camp of 13th New York Cavalry 1864

UMG20A69_357

Prospect Hill, Virginia. Signal station at camp of...

Richmond, Virginia. Military telegraph operators 1865

UMG20A70_078

Richmond, Virginia. Military telegraph operators 1...

Field telegraph station 1863

UMG20A73_388

Field telegraph station 1863

Bermuda Hundred, Virginia. Photographer at Butler's signal tower 1864

UMG20A59_245

Bermuda Hundred, Virginia. Photographer at Butler'...

Brandy Station, Va. Wagons and men of the U.S. Military Telegraph Construction Corps 1864

UMG20A59_496

Brandy Station, Va. Wagons and men of the U.S. Mil...

Petersburg, Va. Military telegraph operators at headquarters; another group 1864

UMG20A68_443

Petersburg, Va. Military telegraph operators at he...

Washington, D.C. Signal Corps officers lowering flag at their camp near Georgetown; Gen Albert J. Myer, in civilian dress, at right of pole 1865

UMG20A73_227

Washington, D.C. Signal Corps officers lowering fl...

US Signal Corps works with Wireless in the Field

UMG20A73_004

US Signal Corps works with Wireless in the Field

Charleston, South Carolina. Light house of Fort Sumter 1865

UMG20A60_349

Charleston, South Carolina. Light house of Fort Su...

Morris Island, South Carolina. The Beacon House after the struggle for Fort Wagner, July 18, 1863. 1863

UMG20A67_359

Morris Island, South Carolina. The Beacon House af...

Morris Island (vicinity), South Carolina. Ruins of Charleston lighthouse 1863

UMG20A67_346

Morris Island (vicinity), South Carolina. Ruins of...

Bermuda Hundred, Va. Butler's signal tower; another view 1864

UMG20A59_239

Bermuda Hundred, Va. Butler's signal tower; anothe...

Petersburg, Va. Military telegraph operators at headquarters 1864

UMG20A68_442

Petersburg, Va. Military telegraph operators at he...

Bermuda Hundred, Va. Butler's signal tower; another view 1864

UMG20A59_238

Bermuda Hundred, Va. Butler's signal tower; anothe...

Eagleton, Va. Group of military telegraph operators, headquarters, Army of the Potomac 1863

UMG20A62_135

Eagleton, Va. Group of military telegraph operator...

Petersburg, Virginia (vicinity). Military telegraph operator, headquarters, Army of the Potomac 1864

UMG20A68_470

Petersburg, Virginia (vicinity). Military telegrap...

Signal Corps US Army has light for nighttime signaling

UMG20A70_427

Signal Corps US Army has light for nighttime signa...

Petersburg, Va. Two youthful military telegraph operators at headquarters 1864

UMG20A68_462

Petersburg, Va. Two youthful military telegraph op...

Washington, D.C. Central Signal Station, Winder Building, 17th and E Streets NW, and Signal Corps men 1865

UMG20A73_180

Washington, D.C. Central Signal Station, Winder Bu...

Marines Signaling from Shore to Ships at Sea 1917

UMG20A50_126

Marines Signaling from Shore to Ships at Sea 1917

New Radio Gear For Flyers

UMG20A21_437

New Radio Gear For Flyers

Carolinas in 1711 1711

UMG20A03_213

Carolinas in 1711 1711

Railroad Train Signals

UMG20A17_447

Railroad Train Signals

Semaphore signalling, Palestine. A British officer of the Royal Corps of Signals uses semaphore

UMG12A14_022

Semaphore signalling, Palestine. A British officer...

Signaller in the Palestinian desert. A British officer of the Royal Corps of Signals stops his car

UMG12A14_030

Signaller in the Palestinian desert. A British off...

Kenyan traffic policeman. The policeman signals 'stop' with his white glove. Behind him two

UMG12A01_315

Kenyan traffic policeman. The policeman signals 's...

San Joseph railway junction, Trinidad. View of the signal box at San Joseph railway junction on the

UMG12A11_164

San Joseph railway junction, Trinidad. View of the...

Message envoyé par le cargo Birma, en réponse au signal de détresse émis par le RMS Titanic

UMG12A00_051

Message envoyé par le cargo Birma, en réponse au s...