olden days                     roger luebeck   minnesota
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Favorite Musical Film Clips   (1936 - 1964)

Hermit Thrush in Minnesota

Lake Calhoun Days

Our Family Website


more links lower on page

 
 
Color photographs are from 2017 - 2019



Engineers' Creed of 1954

Relativity Trail, the book (free pdf)

Relativity in absolute terms

RogCAD 3D CAD

RogCAD Girder and Panel building set

Chaos etc - equations and graphical output




more olden days  (back page)