Transpiranto: Antisemitism, xenophobia, or just a joke?

In 1929, the Swedish comic magazine Grönköpings veckoblad published an article about a new planned language called Transpiranto. From 1948, the magazine regularly published texts in Transpiranto, usually translations of Swedish poems and original pompous trash. Transpiranto is not a complete language, but a mixture of European languages with traits of Esperanto vocabulary and grammar. From 1960 until this day, Transpiranto generally was interpreted as a joke about Esperanto - friendly or malicious. This study explores how the existence of Transpiranto was understood from 1929 until now, whether the joke language had any ties to antisemitism, which was abundant in Swedish comic papers in the early 20th century, and the reasons for changes in the understanding about Transpiranto.