When did telegraphs first come into use?

They were in part DEVELOPED by the GPO authorities in Great Britain ( If you can"t fight "em join em) as they saw this new mode of communications a rival to the traditional (and surviving postal system) Cable ships were and are registered to Post Office agencies in Great Britainl sounds an odd postal application UK involvement of the Postal services -Royal Mail if you will with telegraphy probably antedates the US Invention of the Morse telegraph and was adapted to the older Wheatstone Bridge type of dial telegraph, maybe around very early (l837) Victorian times. By the way in Europe in general one goes to pay the Phone Bill at a special counter-at the Post Office! Leica developed the oddly titled MD (nothing to do with medicine) camera to clandestinely photograph TELEPHONE and POSTAGE meter readings. known also as the Post camera they have no viewfinder or sights. the operator held it over the meter and squeezed off the shutter. Deutsche Bundepost S.O.P. They were in part DEVELOPED by the GPO authorities in Great Britain ( If you can"t fight "em join em) as they saw this new mode of communications a rival to the traditional (and surviving postal system) Cable ships were and are registered to Post Office agencies in Great Britainl sounds an odd postal application UK involvement of the Postal services -Royal Mail if you will with telegraphy probably antedates the US Invention of the Morse telegraph and was adapted to the older Wheatstone Bridge type of dial telegraph, maybe around very early (l837) Victorian times. By the way in Europe in general one goes to pay the Phone Bill at a special counter-at the Post Office! Leica developed the oddly titled MD (nothing to do with medicine) camera to clandestinely photograph TELEPHONE and POSTAGE meter readings. known also as the Post camera they have no viewfinder or sights. the operator held it over the meter and squeezed off the shutter. Deutsche Bundepost S.O.P.