The telephone specification was correct. Long-distance speech needs the far end to sound like the near end, repeaters in tandem compound their errors, and Harold Black's answer to that was excellent engineering that we all still use. Nothing in this chain is an argument against it.
The chain is about what happened to the word afterwards. A specification is a description of a job. It is not a description of how the world should be, and the moment its vocabulary escapes the job it was written for, it starts issuing verdicts it was never entitled to issue. Distortion escaped in 1887 and has been at large since.
Not an argument against measurement, engineering or specifications. Black's amplifier is one of the great inventions and this page says so twice. The collection this zine belongs to exists to reclaim science from the things that wear its clothes, not to be suspicious of it.
Not a claim that amplifiers tell you anything about people. Spread 15 is tagged leap for that reason, and it is the only leap here.
Not a story with a villain. The radio programmers were frightened, the Senate was responding to real public alarm, and Wertham believed he was protecting children. The falsification is documented; the malice is not, and we are not supplying it.
Not a resolution of who Link Wray was. The documentary record disagrees with itself and we have left it disagreeing.
Sources, and what we could not reach
The record. Cary O'Dell, “Rumble” — Link Wray (1958), essay for the National Recording Registry, Library of Congress, added 2008 — the source for the ban being for the title, the original name Oddball, the Fredericksburg origin, Wray's own account of the tweeters, the influence list, and the chart crossover. Chart positions (16 pop, 11 R&B) cross-checked against Joel Whitburn's chart compilations as cited by others; we did not open Whitburn ourselves. Release date is given as April 1958 by the Library and 31 March 1958 elsewhere; we say spring.
The renaming. Two accounts that disagree, both reported and neither adopted: the Library of Congress (Archie Bleyer's daughter, and the Library itself calls it legend) and Rolling Stone's 2005 obituary by James Sullivan (Phil Everly). Spread 4 is tagged contested on that basis.
The pencil that was a pen. The New York Times obituary and Rolling Stone both have a pencil through the speaker cone. Wray, quoted in Guitar magazine via the Registry essay, says a pen through the tweeters and that he left the big speaker alone. We follow him.
Negative feedback. Ronald Kline, “Harold Black and the negative-feedback amplifier”, IEEE Control Systems 13(4), 1993 — read in full for the date, the Lackawanna Ferry, the blank newspaper page, and the statement of the problem. A figure we declined: the widely repeated claim that the December 1927 test reduced distortion “by a factor of 100,000” is not in Kline, and we did not find its primary. It appears nowhere on this page.
The word. Etymology from the Online Etymology Dictionary: 1580s, from Latin distorquere; technical signal sense 1887.
The apparatus. Senate Subcommittee on Juvenile Delinquency hearings, New York, 21–22 April and 4 June 1954, Kefauver chairing, twenty-two witnesses; Comics Code Authority established 1954. Carol L. Tilley, “Seducing the Innocent: Fredric Wertham and the Falsifications That Helped Condemn Comics”, Information & Culture: A Journal of History 47(4), 2012, 383–413, from Wertham's papers opened to researchers in 2010. We have read the article's abstract and the published accounts of its findings, not the article itself, and say so rather than implying otherwise.
Companion. The Sound rack We Were Punk First carries the recording, and It Take a Joyful Sound carries the acoustics — what distortion is, as opposed to what it was called.