- 1Catalogue 'Telegraph Apparatus’, No 4 (MS/2159/1)
1912-09, file - 2Catalogue ‘Telegraph Apparatus and Accessories’, No 39 (MS/2159/2)
1921-01, file - 3Catalogue ‘Telegraph Apparatus and Accessories’ (MS/2159/3)
c. 1925, file - 4Catalogue ‘Vyle’s direct reading polarised sounder’, No 79 (MS/2159/4)
1927-04, file - 5Advertising poster for Vyle’s telegrapher sounder entitled 'Wherever Telegraph Men foregather' (MS/2159/5)
undated, item - 6Journal entitled 'The Telegraph Chronicle and Civil Service Recorder', issue 2 (MS/2159/6)
1904-12, file - 7Portrait photographs of Charles Clement Vyle (MS/2159/7)
undated, file - 8Advertising poster for Vyle’s polarised polechanger entitled 'Wherever Telegraph Men foregather' (MS/2159/8)
undated, file - 9Journal 'The Post Office Electrical Engineers’, Vol 3 Part 1 (MS/2159/9)
1910-04, file