› First telephone
› First television
› First telescope
› First telegraph
› First telephone invented
› First television broadcast
› First telephone call
› First televised presidential debate
› First tellurium stock
› First telegraph message
› First tellurium corp
› First telephone exchange new haven
› First television image
› First television show
› First telescope invented
› First televised baseball game
› First televised football game
› First telephone 1876
› First television invented
› First telecom industries
› First-tel communications
› First telecom