Results

Letter from Bolton to Culley

A.l.s. to W H Preece from R S Culley

A.l.s. to R S Culley from W H Preece

[Manuscript copy of] two letters re Preece's relay system.

A.l.s. to G Pellatt from W H Preece

A.l.s. to R S Culley from W H Preece

A.l.s. to R S Culley from W H Preece

A.l.s. to Mr Sivewright from W Langdon, referring to new key for duplex equipment sent to Brighton, with attached correspondence

A.l.s. to R S Culley from W Langdon,with attached reply.

Manuscript copies of correspondence re Varley's condensers

Notes on duplex experiments

Cariacature entitled "The death of poor P.Q."

R S Culley correspondence