British Intelligence - Volume II - Book Review. - Ralph Erskine (Cryptologia, 1984)

Alan Turing: the Enigma - Book Reviem. - Ralph Erskine (Cryptologia, 1984)

An Early Success Story. - Ralph Erskine (Cryptologia, 1985)

British Intelligence - Volume 3, Part 1 - Book Review. - Ralph Erskine (Cryptologia, 1985)

Enigma and the Polish Contribution: Book Review. - Ralph Erskine (Cryptologia, 1985)

Review of Things Cryptologic. - Louis Kruh; Ralph Erskine (Cryptologia, 1985)

Enigma: the Dropping of the Double Encipherment. - Gilbert Bloch; Ralph Erskine (Cryptologia, 1986)

From the Archives GC and CS Mobilizes "Men of the Professor Type". - Ralph Erskine (Cryptologia, 1986)

A Link with PEARL Harbor? Book Review. - Ralph Erskine (Cryptologia, 1986)

Naval Enigma: M4 and its Rotors. - Ralph Erskine; Frode Weierud (Cryptologia, 1987)

Reviews and Things Cryptologic. - Louis Kruh; Ralph Erskine (Cryptologia, 1987)

From the Archives Tunny Decrypts. - Ralph Erskine (Cryptologia, 1988)

From the Archives: U-boat HF WT signalling. - Ralph Erskine (Cryptologia, 1988)

Reviews and Things Cryptologic. - Louis Kruh; Ralph Erskine; Michael Barlow (Cryptologia, 1988)

From the Archives: a Bletchley Park Assessment of German Intelligence on Torch. - Ralph Erskine (Cryptologia, 1989)

The German Naval Grid in World War II. - Ralph Erskine (Cryptologia, 1992)

Ultra and Some U. S. Navy Carrier Operations. - Ralph Erskine (Cryptologia, 1995)

Kriegsmarine Signal Indicators. - Ralph Erskine (Cryptologia, 1996)

The First Naval Enigma Decrypts of World War II. - Ralph Erskine (Cryptologia, 1997)

Kriegsmarine Short Signal Systems - and How Bletchley Park Exploited Them. - Ralph Erskine (Cryptologia, 1999)

What did the Sinkov Mission Receive from Bletchley Park? - Ralph Erskine (Cryptologia, 2000)

From the Archives What the Sinkov Mission Brought to Bletchley Park. - Ralph Erskine (Cryptologia, 2003)

Brigadier John Tiltman: One of Britain's finest Cryptologists. - Ralph Erskine; Peter Freeman 002 (Cryptologia, 2003)

Naval Enigma: Seahorse and Other Kriegsmarine Cipher Blunders. - Ralph Erskine; Philip Marks (Cryptologia, 2004)

The 1944 Naval Brusa Agreement and its Aftermath. - Ralph Erskine (Cryptologia, 2006)

The Poles Reveal their Secrets: Alastair Denniston's Account of the July 1939 Meeting at Pyry. - Ralph Erskine (Cryptologia, 2006)

Captured Kriegsmarine Enigma Documents at Bletchley Park. - Ralph Erskine (Cryptologia, 2008)

Ultra Reveals a Late B-Dienst Success in the Atlantic. - Ralph Erskine (Cryptologia, 2010)

Review of The Hidden History of Bletchley Park: A Social and Organisational History, 1939-1945 by Christopher Smith. - Ralph Erskine (Cryptologia, 2018)

Review of The Nazi Spy Ring in America by Rhodri Jeffreys-Jones. - Ralph Erskine (Cryptologia, 2021)