Question: What year was the ALGOL 60 Complier implemented by C.A.R Hoare first released?

Context articles: LEAP (programming language)
Whetstone (benchmark)
Tony Hoare
Jørn Jensen
Demonic non-determinism
ALGOL 60
Man or boy test
Angelic non-determinism
Elliott ALGOL
ALGOL W

LEAP is an extension to the ALGOL 60 programming language which provides an associative memory of triples.
 The three items in a triple denote the association that an Attribute of an Object has a specific Value.
 LEAP was created by Jerome Feldman (University of California Berkeley) and Paul Rovner (MIT Lincoln Lab) in 1967.
 LEAP was also implemented in SAIL.
The Whetstone benchmark is a synthetic benchmark for evaluating the performance of computers.
 It was first written in Algol 60 in 1972 at TSU (The Technical Support Unit of the Department of Trade and Industry - later part of the Central Computer and Telecommunications Agency or CCTA in the United Kingdom).
 It was derived from statistics on program behaviour gathered on the KDF9 computer at NPL National Physical Laboratory in the United Kingdom, using a modified version of its Whetstone ALGOL 60 compiler.
 The workload on the machine was represented as a set of frequencies of execution of the 124 instructions of the Whetstone Code.
 The Whetstone Compiler was built at the Atomic Power Division of the English Electric Company in Whetstone, Leicestershire, England, hence its name.
 Dr. B.A. Wichman at NPL produced a set of 42 simple ALGOL 60 statements, which in a suitable combination matched the execution statistics.
Sir Charles Antony Richard Hoare FRS FREng (born 11 January 1934), commonly known as Tony Hoare or C. A. R. Hoare, is a British computer scientist.
 He developed the sorting algorithm quicksort in 1959/1960.
 He also developed Hoare logic for verifying program correctness, and the formal language communicating sequential processes (CSP) to specify the interactions of concurrent processes (including the dining philosophers problem) and the inspiration for the occam programming language.
Jørn Jensen (1925–2007), one of the earliest Danish programmers.
 Examined as a mechanical engineer and had worked with electromechanical construction.
 In 1958 employed at the Danish Regnecentralen, and very soon exhibited an extraordinary programming skill.
 He developed the main parts of the base programs to DASK, the first Danish computer – among others, he designed a collection of monitor programs to supervise the program running schedule on DASK.
 In tight collaboration with Peter Naur and others, he developed reliable, well documented compilers to the ALGOL 60 programming language.
 In this context he invented Jensen's Device, an ingenious exploitation of the name parameters to compute numerical series without using procedure parameters – as is necessary in all programming languages, except ALGOL 60, and Simula-67.
A term coined by C.A.R Hoare, which describes the execution of a non-deterministic program where all choices that are made favour non-termination.
ALGOL 60 (short for ALGOrithmic Language 1960) is a member of the ALGOL family of computer programming languages.
 It followed on from ALGOL 58 which had introduced code blocks and the codice_1 and codice_2 pairs for delimiting them.
 ALGOL 60 was the first language implementing nested function definitions with lexical scope.
 It gave rise to many other programming languages, including CPL, Simula, BCPL, B, Pascal and C.
The man or boy test was proposed by computer scientist Donald Knuth as a means of evaluating implementations of the ALGOL 60 programming language.
 The aim of the test was to distinguish compilers that correctly implemented "recursion and non-local references" from those that did not.
A term coined by C.A.R Hoare, which describes the execution of a non-deterministic program where all choices that are made favor termination.
Elliott ALGOL was an ALGOL 60 compiler for the Elliott 803 computer.
 It was implemented by Tony Hoare and others.
 It differed slightly from the reference version of Algol, particularly in the supported character set.
 First released in February 1962, it is believed to be the first implementation of an ALGOL 60 compiler in a commercial context and was an unexpectedly popular product for the company.
ALGOL W is a programming language.
 It is based on a proposal for ALGOL X by Niklaus Wirth and Tony Hoare as a successor to ALGOL 60 in IFIP Working Group 2.1.
 When the committee decided that the proposal was not a sufficient advance over ALGOL 60, the proposal was published as "A contribution to the development of ALGOL".
 After making small modifications to the language Wirth supervised a high quality implementation for the IBM/360 at Stanford University that was widely distributed.