Just came across this FWIW. 500 page list of WU materials at the Smithsonian… https://sirismm.si.edu/EADpdfs/NMAH.AC.0205.pdf -- Nick England K4NYW www.navy-radio.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20220705/7c126905/attachment.html>