Details

A.l.s. to Mr Sivewright from W Langdon, referring to new key for duplex equipment sent to Brighton. INcludes instructions for fixing the key. With a.l.s.to Mr Shepherd from Mr Sivewright, referring to new key; a.l.s. to Mr Sivewright from Mr Shepherd, referring to problems with the new key; a.l.s. to Mr Shepherd from Mr Sivewright, requesting another trail with the new key; a.l.s. to Mr Sivewright from Mr Shepherd, referring to new trials; a.l.s. to W H Preece from Mr Sivewright, referring to enclosed papers on the key; a.l.s. to W Langdon from R S Culley, referring to problems on the circuit.