Personal

  • My family


  • Herbert J. Levin's World War II chronology


  • Dear Margaret letters


  • Levin Family recipes


  • Escher waterfall models


  • Spoon Balancer attachment


  • Cup Balancer attachment


  • 3-D printed Balanced cups


  • hand-built Balanced cups


  • Airplane wheel spinner


  • My collection of Dona Hutchins' batiks


  • Academic advice


  • Academic humor


  • DonOLD & The U.S.A., recorded and published in September 2024


  • my Escher font
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    Last updated: April 30, 2025