A fact from Linguistic Atlas of the Iberian Peninsula appeared on Wikipedia's Main Page in the Did you know column on 3 May 2023 (check views). The text of the entry was as follows:
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The following is an archived discussion of the DYK nomination of the article below. Please do not modify this page. Subsequent comments should be made on the appropriate discussion page (such as this nomination's talk page, the article's talk page or Wikipedia talk:Did you know), unless there is consensus to re-open the discussion at this page. No further edits should be made to this page.
ALT1: ... that the linguist Aníbal Otero was imprisoned for espionage while working on fieldwork for the Linguistic Atlas of the Iberian Peninsula? Source: "On the strength of ‘evidence’ that he was a spy — his avowed sympathy for the Republican cause, the fact that his ALPI fieldwork was funded by the Republican government in Madrid, and especially those suspicious notebooks he had with him, which were apparently full of incomprehensible writing in ‘code’ — a summary military tribunal convicted Otero of high treason and sentenced him to death by firing squad... his death sentence was commuted to life imprisonment. He was eventually pardoned and released in 1941 (two years after the end of the Civil War), having spent more than five years in prison for the crime of linguistic fieldwork and Republican sympathies " https://twpl.library.utoronto.ca/index.php/twpl/article/view/6165