FYI https://www.nytimes.com/2024/02/08/science/walter-shawlee-dead.html https://www.nytimes.com/1999/06/17/technology/slide-rules-tap-into-nostalgia... Stay sane, Jonathan PS I do do more than read obits. I'm just not sure what. Jonathan Coopersmith Fellow, American Association for the Advancement of Science Professor Emeritus Department of History Texas A&M University College Station, TX 77843-4236 979.739.4708 (cell) John Mather "Instrument Maker to the Stars," <https://aerospaceamerica.aiaa.org/departments/instrument-maker-to-the-stars/> *Aerospace America* November 2023 "Technological obsolescence, <https://www.nationalacademies.org/news/2023/05/technological-obsolescence>" National Academy of Engineering *Perspectives* May 23, 2023 Preserving space archives: https://www.toboldlypreserve.space/