Which W W Sawyer titles exist in non-English language editions? In this community question asking about books that teach the practice of mathematics, the author mentions the works of W W Sawyer.
Which of Sawyer's books were translated into languages other than English, and what are the publication details?
His Wikipedia page states that his books Mathematician's Delight and Prelude to Mathematics "have been translated into many languages", but I have been unable to find publication details for any non-English language edition of even a single book of his. The cited source is an article by Ailsa Ferguson published by the University of Toronto (thanks, @Igor Khavkine, for tracking this down at Archive.org) which states that MD was translated into 10 languages and PtM into six, but that's all I know at the moment.
 A: The Polish Wikipedia page of W W Sawyer lists titles of the translations (with some publication details) of his books into Polish, but not the original titles (Mathematicians' Delight seems to be Matematyka Nauka Przyjemna; I don't have a copy at hand to confirm). Some of these translations had multiple editions; covers can be seen here: https://www.google.com/search?source=univ&tbm=isch&q=W+W+Sawyer+matematyka&client=firefox-b&sa=X&ved=2ahUKEwiDscvv7PXpAhUS2qwKHdOLBe8QsAR6BAgIEAE&biw=1588&bih=713
A: As requested here is the URL for the search results.
https://kvk.bibliothek.kit.edu/hylib-bin/kvk/nph-kvk2.cgi?maske=kvk-redesign&lang=en&title=KIT-Bibliothek%3A+Karlsruher+Virtueller+Katalog+KVK+%3A+Ergebnisanzeige&head=%2F%2Fkvk.bibliothek.kit.edu%2Fasset%2Fhtml%2Fhead.html&header=%2F%2Fkvk.bibliothek.kit.edu%2Fasset%2Fhtml%2Fheader.html&spacer=%2F%2Fkvk.bibliothek.kit.edu%2Fasset%2Fhtml%2Fspacer.html&footer=%2F%2Fkvk.bibliothek.kit.edu%2Fasset%2Fhtml%2Ffooter.html&css=none&input-charset=utf-8&ALL=&TI=Prelude+to+mathematics&AU=Sawyer&CI=&ST=&PY=&SB=&SS=&PU=&kataloge=BVB&kataloge=SWISSBIB&kataloge=WORLDCAT&ref=direct&client-js=yes
Note that I chose only a few catalogues out of the many that the KVK interface offers. Worldcat yielded many references.  I recommend you try your own searches using your own catalogue choices.
Gerhard "Internet Catalogues Offer The World" Paseman, 2020.06.10.
