The interpretation of quantum mechanics through 1935

I first define what I mean by the term 'interpretation', then trace some of the major developments in attempts to fashion an interpretation of quantum mechanics from its early mathematical formulation (ca. 1925) up through the Einstein-Podolsky-Rosen paper, Bohr's response to it, and Schroedinger's insights on entanglement, in 1935. In the process, I question some of the conventional wisdom about how a unified interpretation emerged. (orig.)