Foreword -- Translation of Michael Sadowsky’s Paper “An Elementary Proof for the Existence of a Developable Möbius Band and the Attribution of the Geometric Problem to a Variational Problem -- Translation and Interpretation of Michael Sadowsky’s Paper “Theory of Elastically Bendable Inextensible Bands with Applications to Möbius Band” -- Translation of Michael Sadowsky’s Paper “The Differential Equations of the Möbius Band” -- Translation of W. Wunderlich’s “On a Developable Möbius Band -- Gamma-Limit of a Model for the Elastic Energy of an Inextensible Ribbon -- “Wunderlich, Meet Kirchhoff”: A General and Unified Description of Elastic Ribbons and Thin Rods -- Equilibrium Shapes with Stress Localisation for Inextensible Elastic Möbius and Other Strips -- Bending Paper and the Möbius Strip -- Roadmap to the Morphological Instabilities of a Stretched Twisted Ribbon -- The Shrinking Figure Eight and Other Solitons for the Curve Diffusion Flow -- Kinematical Aspects of Levi-Civita Transport of Vectors and Tensors Along a Surface Curve -- Non-Euclidean Ribbons -- The Second-Order L 2 Flow of Inextensible Elastic Curves with Hinged Ends in the Plane -- Buckling of Naturally Curved Elastic Strips: The Ribbon Model Makes a Difference -- Residual Stresses and Poisson’s Effect Drive Shape Formation and Transition of Helical Structures -- Representation for a Smooth Isometric Mapping from a Connected Planar Domain to a Surface.