History of ITU Portal – Documents & dynamic web pages

Green Book (1956): Volume I bis: List of Delegates; Minutes of the Meetings of the XVIIIth Plenary Assembly; Modifications: - to Volume I of the Green Book (Recommendations for Letter and Graphical Symbols); - to Volume V of the Green Book (Signalling and Switching); - to Volume VI of the Green Book (Operating Tariffs).

Green Book (1954): Volume II: Protection: Part I – Recommendations of the CCIF Concerning the Protection of Telephone Lines and the Constitution of Telephone Cable Sheaths; Part II – Various Documents.

[Pink Book (1927):] Comité Consultatif International des Communications Téléphoniques à Grande Distance: Questions Concerning the Protection of Telephone Circuits Against Corrosion Due to Electrolysis or to Chemical Action.

Proceedings of the XIth Plenary Meeting [of the CCIF]: Copenhagen, 11th-20th June, 1936.

Green Book (1956): Volume I bis: List of Delegates; Minutes of the meetings of the XVIIIth Plenary Assembly; Modifications: - to Volume I of the Green Book (Recommendations for letter and graphical symbols); - to Volumes V of the Green Book (Signalling and Switching); - to Volume VI of the Green Book (Operating Tariffs)

Green Book (1954): Volume I: List of Delegates; Minutes of the meetings of the XVIIth Plenary Assembly; Organisation of the CCIF; Recommendations covering letter and graphical symbols and systems of units; List of questions [...]; Membership of Study Groups, Committees and Sub-Committees [...]; and Chart Showing the Organisation of the CCIF

Yellow Book (1946): Volume I: List of Delegates; Minutes of the Meetings of the XIVth Plenary Assembly; Organisation Questions; Operating and Tariff Questions; List of Questions set for Study [...]; Composition of Committees of Reporters and Sub-Committees [...].

[Red Book:] Proceedings of the VIIIth CCIF Plenary Assembly (Paris, 1931)

[Yellow Book:] Proceedings of the VIIth CCIF Plenary Assembly (Brussels, 1930)

Red Book (1960): Volume II bis: Part I: Telephone Operation and Tariffs: Recommendations Series E and Questions Study Group II. Part II: Telegraph Operation and Tariffs: Recommendations Series F and Questions Study Group I. Part III: Questions Study Group III: General Tariff Principles and Costing – Lease of Circuits.